function validate(myfrm) {
	var validd = true;
	var strr = "";
	
	if (myfrm.sname.value == "") {
		validd = false;
		strr = strr + "Please enter your name\n";
		myfrm.sname.focus();
	}				
	else if (myfrm.semail.value == "") {
		validd = false;
		strr = strr + "Please enter your email address\n";
		myfrm.semail.focus();		
	}
	else if ((myfrm.semail.value != "") && ((myfrm.semail.value.indexOf("@") == -1) || (myfrm.semail.value.indexOf(".") == -1))) {
		validd = false;
		strr = strr + "Your email address is invalid.\nPlease try again\n";
		myfrm.semail.value = "";
		myfrm.semail.focus();
	}
	else if (myfrm.rname.value == "") {
		validd = false;
		strr = strr + "Please enter the recipients name\n";
		myfrm.rname.focus();
	}				
	else if (myfrm.remail.value == "") {
		validd = false;
		strr = strr + "Please enter recipients email address\n";
		myfrm.remail.focus();		
		
	}
	else if ((myfrm.remail.value != "") && ((myfrm.remail.value.indexOf("@") == -1) || (myfrm.remail.value.indexOf(".") == -1))) {
		validd = false;
		strr = strr + "The recipients email address is invalid.\nPlease try again\n";
		myfrm.remail.value = "";
		myfrm.remail.focus();
	}
	//display result of check
	if (!validd){
		alert(strr);
		return validd;
	}
	else return validd;
}