function blank(element,value) {
    if (element.value == value) element.value="";
}

function fillup(element,value) {
    if (element.value == "") element.value=value;
}

function IsEmailCorrect(email) {
  return email.match(/^[_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)*@([a-zA-Z0-9-]+\.)+([a-zA-Z]{2,4})$/)!=null;
}

function test() {
	if (!IsEmailCorrect(document.getElementById('email').value)) 
		{
			alert ('Your e-mail address is incorrect');
			return false;
		}
	return true;
}

function popUp(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=352,height=352,');");
}


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){
		  
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		    return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		   
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		   
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		   
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		   
		    return false
		 }

 		 return true					
	}
	
	function chk(frm)
	{
			
		if(frm.email.value=="Your Email Address")
		{
			alert("Please enter email !");
			frm.email.focus();
			return false;			
		}else if(echeck(frm.email.value)==false)
		{
			alert("Invalid E-mail ID !");
			frm.email.focus();
			return false;
		}
		
		return true;
		
	}