function validate_required(field,alerttxt){
	with (field){
		if (value==null||value==""){
			alert(alerttxt);
			return false;
		}else {
			return true
		}
	}
}

function validate_email(field,alerttxt){
	with (field){
		apos=value.indexOf("@");
		dotpos=value.lastIndexOf(".");
		if (apos<1||dotpos-apos<2){
			alert(alerttxt);return false;
		}
		else {
			return true;
		}
	}
}

function validate_form(thisform){
	with (thisform){
		if (validate_required(name,"Please enter a name")==false){
			name.focus();
			return false;
		}
		if (validate_email(email,"Please enter a valid email")==false){
			email.focus();
			return false;
		}
	}
}