<!-- Begin validacion email
function checkrequired(frm) 
{
    //
    // Check the Email field to see if any characters were entered
    //
    if (frm.cotizar.value.length == 0)
    {
        alert("Por favor, escriba su Email correctamente");
        frm.cotizar.focus();
        return false;
    }
    //
    // Now check the Email field for the "@" symbol
    //
    if (frm.cotizar.value.indexOf("@") == -1)
    {
        alert("Por favor, escriba su Email correctamente");
        frm.cotizar.focus();
        return false;
    }
}
// End validacion email -->

<!-- Begin info requerida

function checkrequired(which){
var pass=true
if (document.images){
for (i=0;i<which.length;i++){
var tempobj=which.elements[i]
if (tempobj.name.substring(0,8)=="required"){
if (((tempobj.type=="text"||tempobj.type=="textarea")&&tempobj.value=='')||(tempobj.type.toString().charAt(0)=="s"&&tempobj.selectedIndex==-1)){
pass=false
break
}
}
}
}
if (!pass){
alert("Existe información requerida que no ha sido completada. Por favor, complete la información solicitada.")
return false
}
else
return true
}
// End info requerida -->

<!-- Begin mouseover td naveg
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
// End mouseover td naveg -->

//Specify affected tags. Add or remove from list:
var tgs = new Array( 'div','td','tr','span','a','p');

//Specify spectrum of different font sizes:
var szs = new Array( 'xx-small','x-small','small','medium','large','x-large','xx-large' );
var startSz = 1;

function ts( trgt,inc ) {
	if (!document.getElementById) return
	var d = document,cEl = null,sz = startSz,i,j,cTags;
	
	sz += inc;
	if ( sz < 0 ) sz = 0;
	if ( sz > 6 ) sz = 6;
	startSz = sz;
		
	if ( !( cEl = d.getElementById( trgt ) ) ) cEl = d.getElementsByTagName( trgt )[ 0 ];

	cEl.style.fontSize = szs[ sz ];

	for ( i = 0 ; i < tgs.length ; i++ ) {
		cTags = cEl.getElementsByTagName( tgs[ i ] );
		for ( j = 0 ; j < cTags.length ; j++ ) cTags[ j ].style.fontSize = szs[ sz ];
	}
}

function openSite(url) {
	open(url, "extSite", 
			 "width=800, height=600, menubar=no, toolbar=no, location=no, statusbar=no, scrollbars=yes, resizable=yes");
	return false;
}

function openInstructions() {
	newwindow = window.open('/course/instructions.php', "instructions", 
			 "left=100, top=160, width=400, height=500,"
			 + "menubar=no, toolbar=no, location=no, statusbar=no,"
			 + "scrollbars=no, resizable=yes");
	if (window.focus) {
		newwindow.focus();
	}
	return false;
}

function openPop(page, width, height) {
	newwindow = window.open(page, "section", 
			 "left=100, top=160, width=" + width + ", height=" + height + ","
			 + "menubar=no, toolbar=no, location=no, statusbar=no,"
			 + "scrollbars=yes, resizable=yes");
	if (window.focus) {
		newwindow.focus();
	}
	return false;
}