function validate_form(){
if (document.Frm.email.value == '') {
		alert("Enter your E-mail address");
		document.Frm.email.focus();
		return false;
	}
	if (document.Frm.email.value.indexOf('.') < 0) 
	    {
			alert("Invalid Email address");
			document.Frm.email.focus();
			return false;
		}
	else 
	   {
		if (document.Frm.email.value.indexOf('@') < 0) 
		   {
             		   
			alert("Invalid Email address");
			document.Frm.email.focus();
			return false;
		    }
		}
	var apos=document.Frm.email.value.indexOf('@');
    var dotpos=document.Frm.email.value.lastIndexOf('.');
    if ((apos < 1) || (dotpos-apos < 2)) 
			{
			 alert("Invalid Email address");
			 document.Frm.email.focus();
			 return false;
			}  	
	document.Frm.submit();
}