function verificaUsuario(usr,pas) {

    var usr = trim(usr);
    var pas = trim(pas);
	/*String password = trim(pas);
	alert(password);*/
	var pass = pas;
    if (usr == "") {
        alert("El nombre de usuario debe ser especificado.");
        var obj = document.getElementById("user");
        obj.focus();
        obj.select();
        return true;
    }
    if (pas == "") {
        alert("La contraseña debe ser especificada.");
        var obj = document.getElementById("pass");
        obj.focus();
        obj.select();
        return false;
    }
    var obj = document.getElementById("control");
    obj.value = "V";
    document.frm_contenido.submit();
}
//***************************************************************
function verificarUsuario(formulario){
	var usr = "";
	var pas = "";
	var letras = new Array(27);
	var traslacion = 0;
	var password = "";
	letras[0] = "a"; letras[1] = "b"; letras[2] = "c"; letras[3] = "d"; letras[4] = "e";
	letras[5] = "f"; letras[6] = "g"; letras[7] = "h"; letras[8] = "i"; letras[9] = "j";
	letras[10] = "k"; letras[11] = "l"; letras[12] = "m"; letras[13] = "n"; letras[14] = "o";
	letras[15] = "p"; letras[16] = "q"; letras[17] = "r"; letras[18] = "s"; letras[19] = "t";
	letras[20] = "u"; letras[21] = "v"; letras[22] = "w"; letras[23] = "x"; letras[24] = "y";
	letras[25] = "z"; letras[26] = "1"; letras[27] = "2"; letras[28] = "3"; letras[29] = "4";
	letras[30] = "5"; letras[31] = "6"; letras[32] = "7"; letras[33] = "8"; letras[34] = "9";
	letras[35] = "0"; letras[36] = "!"; letras[37] = "#"; letras[38] = "$"; letras[39] = "%";
	letras[40] = "A"; letras[41] = "B"; letras[42] = "C"; letras[43] = "D"; letras[44] = "E";
	letras[45] = "F"; letras[46] = "G"; letras[47] = "H"; letras[48] = "I"; letras[49] = "J";
	letras[50] = "K"; letras[51] = "L"; letras[52] = "M"; letras[53] = "N"; letras[54] = "O";
	letras[55] = "P"; letras[56] = "Q"; letras[57] = "R"; letras[58] = "S"; letras[59] = "T";
	letras[60] = "U"; letras[61] = "V"; letras[62] = "W"; letras[63] = "X"; letras[64] = "Y";
	letras[65] = "Z"; letras[66] = "&"; letras[67] = "_"; letras[68] = "-"; letras[69] = "*";
	usr = formulario.user.value;
	pas = formulario.pass.value;
	for(var i=0; i<pas.length; i++){
		for(var j=0; j<70; j++){
			if(pas.charAt(i)==letras[j]){
				traslacion = j;
				j = 70;
			}
		}
		traslacion = (traslacion + (i+1))%70;
		password = password + letras[traslacion];
	}
	if (usr == "") {
        alert("El nombre de usuario debe ser especificado.");
        var obj = document.getElementById("user");
        obj.focus();
        obj.select();
        return true;
    }
	if (pas == "") {
        alert("La contraseña debe ser especificada.");
        var obj = document.getElementById("pass");
        obj.focus();
        obj.select();
        return false;
    }
	formulario.pass.value = password;
	var obj = document.getElementById("control");
    obj.value = "V";
    formulario.submit();
}
//******************************************************************************
function revisarUsuario(formulario) {
	var usr = "";
	usr = formulario.user.value;
	if (usr == "") {
       alert("El nombre de usuario debe ser especificado.");
       formulario.user.focus();
       formulario.user.select();
       return false;
	}
	formulario.buscarsol.value = "Y";
}
//******************************************************************************
function ingresoUsuario()
{
    var f;
    var c = 0;
    f = document.frm_admin1;	
		
    for (var i = 0;i<f.ingreso_usu.length; i++)
    {	
	if (f.ingreso_usu[i].checked)
	{
            c++;	
	}
    }
			
    if (c == 0)
    {
        alert("Debe seleccionar al menos una opcion.");
    }
    else 
    {
	f.action="ident_usuario.jsp";    
        f.submit();
    }           
}
//******************************************************************************
function registroUsuario()
{   
    var f;
    var c=0;
    f = document.frm_admin1;

    var tipo_usu = new Array(2)

    for (var i = 0;i<f.ingreso_usu.length; i++)
    {	
	if (f.ingreso_usu[i].checked)
	{
            c++;
            tipo_usu[i] = f.ingreso_usu[i].value; 
	}
    }
			
    if (c == 0)
    {
       alert("Debe seleccionar al menos una opcion.");                
    }
    else 
    {
            f.action="registro_usuintegrado.jsp";
            f.target="_blank";
            f.submit();
    }
}
//******************************************************************************
function ingresoEstudiante()
{
    var f;
    var c = 0;
    f = document.frm_admin;	
		
    for (var i = 0;i<f.ingreso_est.length; i++)
    {	
	if (f.ingreso_est[i].checked)
	{
            c++;	
	}
    }
			
    if (c == 0)
    {
        alert("Debe seleccionar al menos una opcion.");
    }
    else 
    {
		f.action="ident_estudiante.jsp";    
        f.submit();
    }           
}
//******************************************************************************
function registroEstudiante()
{   
    var f;
    var c=0;
    f = document.frm_admin;

    var tipo_est = new Array(2)

    for (var i = 0;i<f.ingreso_est.length; i++)
    {	
	if (f.ingreso_est[i].checked)
	{
            c++;
            tipo_est[i] = f.ingreso_est[i].value; 
	}
    }
			
    if (c == 0)
    {
       alert("Debe seleccionar al menos una opcion.");                
    }
    else 
    {
        if(tipo_est[0]=="1")
		{
			f.action="https://www.uis.edu.co/estudiantes/registro/registro.html";
			f.target="_blank";
		}
		else
		{
        f.action="registro_estudiantes.jsp";
		f.target="_parent";
		}
     
        f.submit();         
       // }
    }
}

//******************************************************************************
function registroDocEmpUIS()
{   
    var f;
    var c=0;
    f = document.frm_admin1;

    var tipo_usu = new Array(2)

    for (var i = 0;i<f.ingreso_usu.length; i++)
    {	
	if (f.ingreso_usu[i].checked)
	{
            c++;
            tipo_usu[i] = f.ingreso_usu[i].value; 
	}
    }
			
    if (c == 0)
    {
       alert("Debe seleccionar al menos una opcion.");                
    }
    else 
    {
        f.action="registro_usuarios.jsp";
        f.target="_blank";
        f.submit();
    }
}
//******************************************************************************

//****************************************************************************** 
 function ValidateNumber(val)
	{
	var frmNumber = val;
	if (!isInteger(frmNumber))
		{
		alert("Por favor solo números.");
		return false;
		}
	if (frmNumber==0)
		{
		alert("Por favor números mayores que cero.");
		return false;
		}

	return true;
	}
//****************************************************************************** 
    function isInteger(s)
	{   
            var i;
	    for (i = 0; i < s.length; i++)
	    {   
	        var c = s.charAt(i);
	        if (!isDigit(c)) return false;
	    }
	    return true;
	}
//****************************************************************************** 
    function isDigit(c)
		{   return ((c >= "0") && (c <= "9"))
		}

//****************************************************************************** 
   function validarEstudiante(codigo,programa_academico,password)
   {
        var cod_est = codigo;
        var prog_acad = programa_academico;
        var psw = password;
        
        if(cod_est=="")
        {
            alert("El código de estudiante debde ser especificado.");
            document.frm_ident_est.user.focus();
            return false;
        }

        if(!ValidateNumber(cod_est))
        {
            document.frm_ident_est.user.focus();
            return false;
        }
          
        if(prog_acad=="")
        {
            alert("El programa académico debe ser especificado.");
            document.frm_ident_est.programa_academico.focus();
            return false;
        }
        
        if(psw=="")
        {
            alert("La contraseña debe ser especificada.");
            document.frm_ident_est.pass.focus();
            return false;
        }
        
        var obj = document.getElementById("control");
        obj.value = "V";
        document.frm_ident_est.action = "ident_estudiante.jsp";
        document.frm_ident_est.submit();        
        
   }
//******************************************************************************
   function validarREstudiante(codigo,programa_academico,dia,mes,ano,puntos)
    {
        var cod_est = codigo;
        var prog_acad = programa_academico;
        var dia = dia;
        var mes = mes;
        var ano = ano;
        var puntos = puntos;
        
        var f = document.frm_registro; 

        if (cod_est=="")
        {
            alert("El código de estudiante debe ser especificado.");
            f.user.focus();
            return false;
        }
        
        if(!ValidateNumber(cod_est))
        {
            f.user.focus();
            return false;
        }
        
        if(prog_acad=="")
        {
            alert("El programa académico debe ser especificado.");
            f.programa_academico.focus();
            return false;
        }
        
        if(dia=="")
        {
            alert("El día de su fecha de nacimiento deber ser especificado.");
            f.dia.focus();
            return false;
        }

        if(mes=="")
        {
            alert("El mes de su fecha de nacimiento deber ser especificado.");
            f.mes.focus();
            return false;
        }

        if(ano=="")
        {
            alert("El año de su fecha de nacimiento deber ser especificado.");
            f.anio.focus();
            return false;
        }

        if(puntos=="")
        {
            alert("Los puntos totales acumulados deben ser especificados.");
            f.puntos.focus();
            return false;
        }
        
        if(!ValidateNumber(puntos))
        {
            f.puntos.focus();
            return false;
        }

        var obj = document.getElementById("control");
        obj.value = "V";
        f.action = "registro_estudiantes.jsp";
        f.submit();
        
    }
//******************************************************************************
function validarRContraseña(pass,repass) {
    
    var pass = pass;
    var repass = repass;
    var f = document.frm_confirm_reg;
    
    if(pass=="") {
        alert("La contraseña debe ser especificada.");
        f.pass.focus();
        return false;
    }

    if(repass=="") {
        alert("La confirmacióin de la contraseña debe ser especificado");
        f.repass.focus();
        return false;
    }
    
    if(pass!=repass) {
        alert("Las contraseñas deben ser iguales.");
        f.pass.focus();
        return false;
    }

    var obj = document.getElementById("control");
    obj.value = "V";
    document.frm_confirm_reg.submit();
}
//******************************************************************************
var ventana = null;
//******************************************************************************
var pagina =    "/biblioweb/pags/err/fin_sesion_biblio.jsp";
/******************************************
* Popup Box- By Jim Silver @ jimsilver47@yahoo.com
* Visit http://www.dynamicdrive.com/ for full source code
* This notice must stay intact for use
******************************************/
var ns4=document.layers
var ie4=document.all
var ns6=document.getElementById&&!document.all
//******************************************************************************
//drag drop function for NS 4////
/////////////////////////////////
//******************************************************************************
var dragswitch=0
var nsx
var nsy
var nstemp
//******************************************************************************
function drag_dropns(name){
    if (!ns4)
    return
    temp=eval(name)
    temp.captureEvents(Event.MOUSEDOWN | Event.MOUSEUP)
    temp.onmousedown=gons
    temp.onmousemove=dragns
    temp.onmouseup=stopns
}
//******************************************************************************
function gons(e){
    temp.captureEvents(Event.MOUSEMOVE)
    nsx=e.x
    nsy=e.y
}
//******************************************************************************
function dragns(e){
    if (dragswitch==1){
        temp.moveBy(e.x-nsx,e.y-nsy)
        return false
    }
}
//******************************************************************************
function stopns(){
    temp.releaseEvents(Event.MOUSEMOVE)
}
//******************************************************************************
////drag drop function for ie4+ and NS6////
//******************************************************************************
function drag_drop(e){
    if (ie4&&dragapproved){
        crossobj.style.left=tempx+event.clientX-offsetx
        crossobj.style.top=tempy+event.clientY-offsety
        return false
    }
    else if (ns6&&dragapproved){
        crossobj.style.left=tempx+e.clientX-offsetx+"px"
        crossobj.style.top=tempy+e.clientY-offsety+"px"
        return false
    }
}
//******************************************************************************
function initializedrag(e){
    crossobj=ns6? document.getElementById("showimage") : document.all.showimage
    var firedobj=ns6? e.target : event.srcElement
    var topelement=ns6? "html" : document.compatMode && document.compatMode!="BackCompat"? "documentElement" : "body"
    while (firedobj.tagName!=topelement.toUpperCase() && firedobj.id!="dragbar"){
        firedobj=ns6? firedobj.parentNode : firedobj.parentElement
    }
    if (firedobj.id=="dragbar"){
        offsetx=ie4? event.clientX : e.clientX
        offsety=ie4? event.clientY : e.clientY

        tempx=parseInt(crossobj.style.left)
        tempy=parseInt(crossobj.style.top)

        dragapproved=true
        document.onmousemove=drag_drop
    }
}
document.onmouseup=new Function("dragapproved=false")
//******************************************************************************
////drag drop functions end here//////
//******************************************************************************
function hidebox(){
    try{
        crossobj=ns6? document.getElementById("showimage") : document.all.showimage
        if (ie4||ns6)
        crossobj.style.visibility="hidden"
        else if (ns4)
        document.showimage.visibility="hide"
    }catch(e){
        alert("Una excepcion de JavaScript ha ocurrido en js_file00(hidebox).\nNombre de Error: " + e.name + "\nMensaje de Error : " + e.message);
   }
}
//******************************************************************************
function showbox(tml, tmn){
    try{
        window.focus();
        crossobj=ns6? document.getElementById("showimage") : document.all.showimage
        if (ie4||ns6)
        crossobj.style.visibility="visible"
        else if (ns4)
        document.showimage.visibility="show"
        Down(tmn);
        //setTimeout ("redireccionar()", tml);
   }catch(e){
        alert("Una excepcion de JavaScript ha ocurrido en js_file00(showbox).\nNombre de Error: " + e.name + "\nMensaje de Error : " + e.message);
   }
}
//******************************************************************************
function redireccionar(){
    //var obj = document.getElementById("tpcontrol");
    //var tipo_pag = obj.value;
    if (ventana != null){
        if (ventana && ventana.open && !ventana.closed){
            ventana.close();
            location.href = pagina;
        }else{
            location.href = pagina;
        }
    }else{
        location.href = pagina;
    }
}
//******************************************************************************
function iniCtrlAlerta(tiempoMilis, tiempoMinutos){
    try{
        setTimeout ("showbox(" + tiempoMilis + "," + tiempoMinutos + ")", tiempoMilis);
    }catch(e){
        alert("Una excepcion de JavaScript ha ocurrido en js_file00(iniCtrlAlerta).\nNombre de Error: " + e.name + "\nMensaje de Error : " + e.message);
   }
}
//******************************************************************************
var up,down;var min1,sec1;var cmin1,csec1,cmin2,csec2;
function Minutes(data) {
for(var i=0;i<data.length;i++) 
if(data.substring(i,i+1)==":") 
break;  
return(data.substring(0,i)); 
}
function Seconds(data) {        
for(var i=0;i<data.length;i++) 
if(data.substring(i,i+1)==":") 
break;  
return(data.substring(i+1,data.length)); 
}
function Display(min,sec) {     
var disp;       
if(min<=9) disp=" 0";   
else disp=" ";  
disp+=min+":";  
if(sec<=9) disp+="0"+sec;       
else disp+=sec; 
return(disp); 
}
function Up(t) { 
cmin1=0;        
csec1=0;        
//min1=0+Minutes(document.sw.beg1.value); 
//sec1=0+Seconds(document.sw.beg1.value); 
min1=0+Minutes(t); 
sec1=0+Seconds(t); 
UpRepeat(); 
}
function UpRepeat() {   
csec1++;        
if(csec1==60) {
csec1=0; cmin1++; 
}
var obj = document.getElementById("disp1");
obj.value = Display(cmin1,csec1); 
//document.sw.disp1.value=Display(cmin1,csec1);   
if((cmin1==min1)&&(csec1==sec1)) 
alert("Stopwatch Stopped");     
else up=setTimeout("UpRepeat()",1000); 
}
function Down(t) {     
//cmin2=1*Minutes(document.sw.beg2.value);        
//csec2=0+Seconds(document.sw.beg2.value);  
t = t + ":00";      
cmin2=1*Minutes(t);        
csec2=0+Seconds(t);    
DownRepeat(); 
}
function DownRepeat() { 
    csec2--;        
    if(csec2==-1) { 
        csec2=59; cmin2--; 
    }     
    var obj = document.getElementById("disp2");
    obj.value = Display(cmin2,csec2); 
    //document.sw.disp2.value=Display(cmin2,csec2);   
    if((cmin2==0)&&(csec2==0)) {
        //alert("Countdown Stopped");  
        redireccionar();
    }
    else{
        down=setTimeout("DownRepeat()",1000); 
    }
}
//******************************************************************************
function countdown_clock(year, month, day, hour, minute, format)
         {
         //I chose a div as the container for the timer, but
         //it can be an input tag inside a form, or anything
         //who's displayed content can be changed through
         //client-side scripting.
         html_code = '<div id="countdown"></div>';
         
         document.write(html_code);
         
         countdown(year, month, day, hour, minute, format);                
         }
         
function countdown(year, month, day, hour, minute, format)
         {
         Today = new Date();
         Todays_Year = Today.getYear() - 2000;
         Todays_Month = Today.getMonth() + 1;                  
         
         //Convert both today's date and the target date into miliseconds.                           
         Todays_Date = (new Date(Todays_Year, Todays_Month, Today.getDate(), 
                                 Today.getHours(), Today.getMinutes(), Today.getSeconds())).getTime();                                 
         Target_Date = (new Date(year, month, day, hour, minute, 00)).getTime();                  
         
         //Find their difference, and convert that into seconds.                  
         Time_Left = Math.round((Target_Date - Todays_Date) / 1000);
         
         if(Time_Left < 0)
            Time_Left = 0;
         
         switch(format)
               {
               case 0:
                    //The simplest way to display the time left.
                    document.all.countdown.innerHTML = Time_Left + ' seconds';
                    break;
               case 1:
                    //More datailed.
                    days = Math.floor(Time_Left / (60 * 60 * 24));
                    Time_Left %= (60 * 60 * 24);
                    hours = Math.floor(Time_Left / (60 * 60));
                    Time_Left %= (60 * 60);
                    minutes = Math.floor(Time_Left / 60);
                    Time_Left %= 60;
                    seconds = Time_Left;
                    
                    dps = 's'; hps = 's'; mps = 's'; sps = 's';
                    //ps is short for plural suffix.
                    if(days == 1) dps ='';
                    if(hours == 1) hps ='';
                    if(minutes == 1) mps ='';
                    if(seconds == 1) sps ='';
                    
                    document.all.countdown.innerHTML = days + ' day' + dps + ' ';
                    document.all.countdown.innerHTML += hours + ' hour' + hps + ' ';
                    document.all.countdown.innerHTML += minutes + ' minute' + mps + ' and ';
                    document.all.countdown.innerHTML += seconds + ' second' + sps;
                    break;
               default: 
                    document.all.countdown.innerHTML = Time_Left + ' seconds';
               }
               
         //Recursive call, keeps the clock ticking.
         setTimeout('countdown(' + year + ',' + month + ',' + day + ',' + hour + ',' + minute + ',' + format + ');', 1000);
         }
//******************************************************************************
function popUpCtrlSession(URL,wd,gh,parametros) {
    day = new Date();
    id = day.getTime();
    id = "popup";

    var maximo_x;   //ancho del popup
    var maximo_y;   //largo del popup

    if (wd == 0){
        maximo_x = screen.availWidth-10;
    }
    else{
        maximo_x = wd;
    }
    if (gh == 0){
        maximo_y = screen.availHeight-20;
    }
    else{
        maximo_y = gh;
    }
    URL=URL + "?parametros=" + parametros;
     
    var MAX_X = screen.width;   //valores de acuerdo a la Resolución del cliente.
    var MAX_Y = screen.height;

    var alinear_x = MAX_X - maximo_x;
    var alinear_y = 0;

    eval("ventana = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,status=1,menubar=0,resizable=1,width=' + maximo_x + ',height=' +  maximo_y + ',left = 0,top = alinear_y');");
   
}

//******************************************************************************
//Esta función difiere de "popUpCtrlSession", en el valor de la variable "id"
function popUpCtrlSession2(URL,wd,gh,parametros) {
    day = new Date();
    id = day.getTime();
    id = "nueva";

    var maximo_x;   //ancho del popup
    var maximo_y;   //largo del popup

    if (wd == 0){
        maximo_x = screen.availWidth-10;
    }
    else{
        maximo_x = wd;
    }
    if (gh == 0){
        maximo_y = screen.availHeight-20;
    }
    else{
        maximo_y = gh;
    }
    URL=URL + "?parametros=" + parametros;
     
    var MAX_X = screen.width;   //valores de acuerdo a la Resolución del cliente.
    var MAX_Y = screen.height;

    var alinear_x = MAX_X - maximo_x;
    var alinear_y = 0;

    //eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=1,menubar=0,resizable=1,width=' + w + ',height=' + h + ',left = 0,top = 0');");
    eval("ventana = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=1,menubar=0,resizable=1,width=' + maximo_x + ',height=' + maximo_y + ',left = 0,top = alinear_y');");
}
//******************************************************************************
//sin scrollbars para mas pequeñas
function popUpCtrlSession3(URL,wd,gh,parametros) {
    day = new Date();
    id = day.getTime();
    id = "popup";

    var maximo_x;   //ancho del popup
    var maximo_y;   //largo del popup

    if (wd == 0){
        maximo_x = screen.availWidth-10;
    }
    else{
        maximo_x = wd;
    }
    if (gh == 0){
        maximo_y = screen.availHeight-20;
    }
    else{
        maximo_y = gh;
    }
    URL=URL + "?parametros=" + parametros;
     
    var MAX_X = screen.width;   //valores de acuerdo a la Resolución del cliente.
    var MAX_Y = screen.height;

    var alinear_x = MAX_X - maximo_x;
    var alinear_y = 0;

    eval("ventana = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,status=1,menubar=0,resizable=1,width=' + maximo_x + ',height=' +  maximo_y + ',left = 0,top = alinear_y');");
   
}
//******************************************************************************
//Esta función es similar a popUpCtrlSession, sólo que coloca la barra de menú,
//con el fin de imprimir la ventana.
function popUpCtrlSessionImpresion(URL,wd,gh,parametros) {
    day = new Date();
    id = day.getTime();
    id = "popup";

    var maximo_x;   //ancho del popup
    var maximo_y;   //largo del popup

    if (wd == 0){
        maximo_x = screen.availWidth-10;
    }
    else{
        maximo_x = wd;
    }
    if (gh == 0){
        maximo_y = screen.availHeight-20;
    }
    else{
        maximo_y = gh;
    }
    URL=URL + "?parametros=" + parametros;
     
    var MAX_X = screen.width;   //valores de acuerdo a la Resolución del cliente.
    var MAX_Y = screen.height;

    var alinear_x = MAX_X - maximo_x;
    var alinear_y = 0;

    eval("ventana = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,status=1,menubar=1,resizable=1,width=' + maximo_x + ',height=' +  maximo_y + ',left = 0,top = alinear_y');");
   
}
//*************************************************************
function actualizarCorreo(form){
	try{
		var correo = "";
        var seleccionado = false;
		if (form.correo.length != undefined){
			for(var i=0; i<form.correo.length; i++){
				if (form.correo[i].checked){
					correo = form.correo[i].value;
					seleccionado = true;
				}
			}
		}else{
            if (form.correo.checked){
                correo = form.correo.value;
                seleccionado = true;
            }
        }
		if(seleccionado){
			form.actualizar.value = correo;
			return true;
		}else{
			alert("Debe seleccionar algun correo.");
			return false;
		}
	}catch(e){
		alert("Una excepcion de JavaScript ha ocurrido en js_file00().\nNombre de Error: " + e.name + "\nMensaje de Error : " + e.message);
	}
}