function checkvalid()
{
	if(validate() == true)
	{
		document.frmeditdetails.submit();
	}
}
function validate()
{
	var emailid = document.frmeditdetails.txtemail.value;
	
	if(isvalid_email(emailid) == false)
	{
		alert("Please check the Email Id");
		document.frmeditdetails.txtemail.focus();
		return false;
	}
	return true;
}

var emailfilter=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i;

function isvalid_email(str)
{
	return emailfilter.test(str);
}