function validate(frm){
	if(frm.SenderName.value == ""){
		alert("Name is required");
		frm.SenderName.focus();
		return false;
	}
	if(frm.SenderEmail.value == ""){
		alert("Email Address is required");
		frm.SenderEmail.focus();
		return false;
	}else{
		if(!validateEmail(frm.SenderEmail.value)){
			alert("Invalid Email Address");
			frm.SenderEmail.focus();
			return false;
		}
	}
	if(frm.SenderMessage.value == ""){
		alert("Message is required");
		frm.SenderMessage.focus();
		return false;
	}
}
/* validate email */
function validateEmail(stringval){
	var check = /^.+\@.+\..+$/;
	return check.exec(stringval);   
}