function trimSpace(x)
{
	var emptySpace = / /g;
	var trimAfter = x.replace(emptySpace,"");
	return(trimAfter);
}


function emailValidate(incomingString, defaultValue)
{
	if(trimSpace(incomingString).length == 0 || 
	incomingString.search(/[\_\-\d]*[A-Za-z]+[\w\_\-]*[\@][\d]*[A-Za-z]+[\w\-]*[\.][A-Za-z]+/g) == -1 || incomingString==defaultValue)
	{
		return false;
	}
	else
		return true;
}

function doValidate()
{
	if(document.getElementById("email_id").value == "" )
		{
			alert("please enter your Email ID");
			document.getElementById("email_id").focus();
			return false;
		}
	
	if(!emailValidate(document.getElementById('email_id').value)) {
				alert("Please enter a valid E-mail ID");
				document.getElementById('email_id').focus();
				return false;
			}	
	return true;
}