var gotIE = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
var gotNS = (navigator.appName == 'Netscape') ? true : false;
var ns=document.layers;
var ie=document.all;
var ns6=document.getElementById&&!document.all;
var flag=0;



function popWin( url, name, width, height, scroller ) {

	if (gotIE) {
	var left = (screen.Width/2) - width/2;
	var top = (screen.Height/2) - height/2;
	} else if (gotNS) {
	var left = (screen.availWidth/2) - width/2;
	var top = (screen.availHeight/2) - height/2;
	} else {
	var left = (screen.Width/2) - width/2;
	var top = (screen.Height/2) - height/2;
	}

var outStr = 'left='+left+',top='+top+',height=' + height + ',width=' + width;

	if (scroller == true) {
		 outStr = outStr + ',menubar=no,toolbar=no,location=no,directories=no,status=yes,scrollbars=1,resizable=no';
	 } else {
		 outStr = outStr + ',menubar=no,toolbar=no,location=no,directories=no,status=yes,scrollbars=no,resizable=no';
	 }

window.open(url, name, outStr);

}



function validatePromt(Ctrl, PromtStr) {
	alert (PromtStr);
	Ctrl.focus();
	return(true);
}


function checkregister(form)
{
    if (flag == 1)
       return false;

if (! form.email.value){
alert("Please Enter Your Email Address");
form.email.focus();
form.email.select();
return false;
}

if (! (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,5})+$/.test(form.email.value))){
alert("Invalid E-mail Address")
form.email.focus();
form.email.select();
return false;
}

if (! form.fname.value){
alert("Please Enter Your First Name");
form.fname.focus();
form.fname.select();
return false;
}


if (! form.lname.value){
alert("Please Enter Your Last Name");
form.lname.focus();
form.lname.select();
return false;
}

if (! form.pass.value){
alert("Please Enter A Password");
form.pass.focus();
form.pass.select();
return false;
}


 str = form.pass.value
 var validChars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_-';
 if ((str.length < 3)) {
 alert("Your password must be at least 3 characters.")
 form.pass.focus();
 form.pass.select();
 return false;
 }
 for (var j = 0; j < str.length; j++){
   if(validChars.indexOf(str.charAt(j)) == -1) {
 alert("Your password can only contain letters and numbers.")
 form.pass.focus();
 form.pass.select();
 return false;
 }
 }
	Ctrl = form.pass2;
	if (Ctrl.value =="") {
		validatePromt(Ctrl,"Please Confirm Your Password");
		return false;
	}
	if (form.pass.value != form.pass2.value) {
		validatePromt(Ctrl,"Your passwords do not match");
 		form.pass2.focus();
 		form.pass2.select();
		return false;
	}

flag = 1;
return true;
}


function checklogin(form)
{
    if (flag == 1)
       return false;

if (! form.email.value){
alert("Please Enter Your Email Address");
form.email.focus();
form.email.select();
return false;
}

if (! (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,5})+$/.test(form.email.value))){
alert("Invalid E-mail Address")
form.email.focus();
form.email.select();
return false;
}

if (! form.pass.value){
alert("Please Enter Your Password");
form.pass.focus();
form.pass.select();
return false;
}

flag = 1;
return true;
}


function checkmodify(form)
{
    if (flag == 1)
       return false;


if (! form.fname.value){
alert("Please Enter Your First Name");
form.fname.focus();
form.fname.select();
return false;
}

if (! form.lname.value){
alert("Please Enter Your Last Name");
form.lname.focus();
form.lname.select();
return false;
}

if (! form.email.value){
alert("Please Enter Your Email Address");
form.email.focus();
form.email.select();
return false;
}

if (! (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,5})+$/.test(form.email.value))){
alert("Invalid E-mail Address")
form.email.focus();
form.email.select();
return false;
}

    var modules_output = '';

    for (var i=0;i < 5;i++) {
         if (form.opgroup1[i].checked) {
		if (modules_output != ''){
             modules_output += ', '+form.opgroup1[i].value;
		} else {
             modules_output += form.opgroup1[i].value;
		}
         }
     }

   form.group1.value = modules_output;

    var modules_output = '';

    for (var i=0;i < 5;i++) {
         if (form.opgroup2[i].checked) {
		if (modules_output != ''){
             modules_output += ', '+form.opgroup2[i].value;
		} else {
             modules_output += form.opgroup2[i].value;
		}
         }
     }

   form.group2.value = modules_output;

flag = 1;
return true;
}