function maskInput(e)
{ 
	var key;
	var keychar;
	if (window.event)key = window.event.keyCode;
	else if (e)key = e.which;
	else return true;
	keychar = String.fromCharCode(key);
	if ((key==null) || (key==0) || (key==8) ||(key==9) || (key==13) || (key==27) )
		{
	
		return true;
		}
	else if ((("0123456789").indexOf(keychar) > -1))
		{	
		return true
		}
	alert("Please enter a number");
	return false;
	}


function echeck(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("That email address is not valid")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("That email address is not valid")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("That email address is not valid")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("That email address is not valid")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("That email address is not valid")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("That email address is not valid")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("That email address is not valid")
		    return false
		 }

 		 return true					
	}


function ValidateRegForm(){
	var mynn=document.register.mynn;
        var illegalChars = /[\W_]/;
        if ((mynn.value.length < 4) || (mynn.value.length > 12)) {
                alert("Your username must be between 4 and 12 characters long")
                mynn.focus();
                return false;
              }

        if (illegalChars.test(mynn.value)) {
                alert("Your username may only contain letters or numbers")
               mynn.focus();
               return false;
             }

	var emailID=document.register.myemo;
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please enter your email address.")
		emailID.focus();
		return false;
	}
	if (echeck(emailID.value)==false){
		//emailID.value="";
		emailID.focus();
		return false;
	}
	if (document.register.mymobile.value.length>1){
		if (document.register.mymobile.value.length<11 || document.register.mymobile.value.length>13){
		alert("Bad mobile number")
		document.register.mymobile.focus();
		return false;
		}
	}
	return true;
 }

function ValidateSignForm(){

	if (document.sign.mypin.value.length!=4){
		alert("Your PIN must be 4 digits long")
		document.sign.mypin.focus();
		return false;
	}

	createCookie("myid",document.sign.myid.value,31);
	return true;
 }

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	var ck = name+"="+value+expires+"; path=/";
	document.cookie = ck;
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i<ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return "";
}

function DoLoad(){
	document.sign.myid.value=readCookie("myid");
	document.sign.myid.focus();
 }