// JavaScript Document
function trim(str)
{
    if(!str || typeof str != 'string')
        return null;

    return str.replace(/^[\s]+/,'').replace(/[\s]+$/,'').replace(/[\s]{2,}/,' ');
}

function email_check(str) 
{
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
	   //alert("Invalid E-mail ID")
	   return false
	}

	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   //alert("Invalid E-mail ID")
	   return false
	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		//alert("Invalid E-mail ID")
		return false
	}

	 if (str.indexOf(at,(lat+1))!=-1){
		//alert("Invalid E-mail ID")
		return false
	 }

	 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		//alert("Invalid E-mail ID")
		return false
	 }

	 if (str.indexOf(dot,(lat+2))==-1){
		//alert("Invalid E-mail ID")
		return false
	 }
	
	 if (str.indexOf(" ")!=-1){
		//alert("Invalid E-mail ID")
		return false
	 }

	 return true					
}

function popUp(URL, width, height, left, top) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=1,menubar=0,resizable=1,width=" + width + ",height=" + height + ",left=" + left + ",top=" + top + "');");
}

function redirect(URL)
{
	window.location=URL;
}

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];}
}

function load(url, callback)
{
	var xhr;
	
	if(typeof XMLHttpRequest !== 'undefined') 
	{
		xhr=new XMLHttpRequest();
	}
	else
	{
		var versions = ["MSXML2.XmlHttp.5.0",   
						"MSXML2.XmlHttp.4.0",  
						"MSXML2.XmlHttp.3.0",   
						"MSXML2.XmlHttp.2.0",  
						"Microsoft.XmlHttp"];
		for(var i = 0, len = versions.length; i < len; i++)
		{
			try 
			{
				xhr = new ActiveXObject(versions[i]);
				break;
			}
			catch(e){}
		} // end for
	}
	
	xhr.onreadystatechange=function()
	{
		if(xhr.readyState<4 || xhr.status!==200) return;

		callback(xhr);
	};
	
	xhr.open('GET', url, true);
	xhr.send('');
}

function check_login(formname)
{
	form=document.getElementById(formname);
	error=0;
	msg="";
	
	if(trim(form.email.value)==null)
	{	error=1; msg+='Please enter you Username/Email \n'; }
	if(trim(form.password.value)==null)
	{	error=1; msg+='Please enter you Password \n'; }

	if(error==1)
	{	
		alert(msg);
		return false;
	}
	else
	{	return true;
	}
}

function textCounter(field, countfield, maxlimit) 
{
	if (field.value.length > maxlimit)
		field.value = field.value.substring(0, maxlimit);
	else 
		countfield.value = maxlimit - field.value.length;
}

function validateUsername(fld) {
    var error = "";
    var illegalChars = /\W/; // allow letters, numbers, and underscores
 
    if (fld.value == "") {
        error = "&bull; Please enter Username<br>";
    } else if ((fld.value.length < 5) || (fld.value.length > 15)) {
        error = "&bull; Username must have 5-15 characters<br>";
    } else if (illegalChars.test(fld.value)) {
		error = "&bull; Please enter valid Username. Use only numbers and alphabets<br>";
    } else {
        error = "";
    }
    return error;
}

function is_number(str)
{
	if(str.length==0)
	{
		return false;
	}
	numdecs = 0;
	for (i = 0; i < str.length; i++)
	{
		mychar = str.charAt(i);
		if ((mychar >= "0" && mychar <= "9") || mychar == "." )
		{
			if (mychar == ".")
			numdecs++;
		}
		else 
		{
			return false;
		}
	}
	if (numdecs > 1){return false;}
	return true;
}// end isNumber function