function realestate_installCascadingMenu(navId)
{
	if (document.getElementById(navId))
		mbSet(navId, 'mb');
}

function SubscriptionSubmit() {
	frm = document.newsletter_subscription;
	if (frm.first_name.value.length == 0) {
		alert("You must enter your first name.");
		frm.first_name.focus();
		return false;
	}
	if (frm.last_name.value.length == 0) {
		alert("You must enter your last name.");
		frm.last_name.focus();
		return false;
	}
	if (!check_email(frm)) return false;
	return true;
}
function check_email(form) {
	// check format of email address
	if (parseInt(form.email.value.length,10) > 0) {
		var emailpat = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;
		var testString = form.email.value;
		if (!emailpat.test(testString)) {
			alert ("The format of the email address you have entered is invalid.  Please check and re-enter.");
			form.email.focus();
			return false;
		}
	} else {
		alert ("You must enter a valid contact email address.");
		form.email.focus();
		return false;
	}
	return true;
}

function IDSrchSubmit() {
	if($('id_num').value.length == 0 || $('id_num').value=="Enter Poperty ID") {
		alert("Please enter an ID number");
		$('id_num').focus();
		return false;
	} else {
		return true;
	}
	return false;
}

function clearInp(obj, status, txt){
	if(status==0 && obj.value==txt){
		obj.value='';
	}
	if(status==1){
		obj.value=txt;
	}
}

function popup(html_file,x,y,windowname) {
	option_params = 'width='+x+',height='+y+',menubar=no,toolbar=no,status=yes,resizable=yes,personalbar=no,location=no,directories=no,scrollbars=yes';
	pop=window.open(html_file,windowname,option_params);
}