function validate_required(field) {
	with (field){
		if (value==null||value=="") {
			return false;
		}
		else {
			return true;
		}
	}
}
function validate_form(thisform) {
	with (thisform) {
		if (validate_required(firstname)==false) {
			alert("\"First Name\" must be entered!");
			firstname.focus();
			return false;
		}
		else if (validate_required(lastname)==false) {
			alert("\"Last Name\" must be entered!");
			lastname.focus();
			return false;
		}
		else if (validate_required(homephone)==false) {
			alert("\"Home Phone\" must be entered!");
			homephone.focus();
			return false;
		}
		else if (number.value==0) {
			alert("Please enter validation code.");
			number.focus();
			return false;
		}
	}
}