function validateEmail(myform)
 {  
    if(myform.email_id.value=="")
    {
    	jQuery("#message").html('Please enter your email address');
        return false;
    }
    
var elem;
var re_mail = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;

if (!re_mail.test(myform.email_id.value))
 {   
	jQuery("#message").html('Please enter a valid email address');
	myform.email_id.focus();  
	myform.email_id.select(); 
	return false;
}
elem=document.getElementsById('message');  
elem.data = ' ';
return true;  
}