function validateForm(form){
         initSpan();

         var email = form.email.value;    
         var pattern = /^([.a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;    

         if((form.name.value == "") || (!pattern.test(email)) || (form.tel.value == "") || (form.selectInquire.value == "")){
            $('tip_validation').innerHTML = "Please enter your name, contact, email, and inquiry.";    
            return false;
            }
}

function initSpan(){
         $('tip_validation').innerHTML = "";
}

function $(id){
         return document.getElementById(id);
}

function hiddenTR(id,type){
	var img1 = "demo_"+type+"_img_open_"+id;
	var img2 = "demo_"+type+"_img_close_"+id;
	var imgtr = "demo_"+type+"_tr_"+id;
	var a = document.getElementById(img1).style.display = "none";
	var b = document.getElementById(img2).style.display = "";
	var c = document.getElementById(imgtr).style.display = "none";
}
function displayTR(id,type){
	var img1 = "demo_"+type+"_img_open_"+id;
	var img2 = "demo_"+type+"_img_close_"+id;
	var imgtr = "demo_"+type+"_tr_"+id;
	var a = document.getElementById(img1).style.display = "";
	var b = document.getElementById(img2).style.display = "none";
	var c = document.getElementById(imgtr).style.display = "";
}
function openwindow(ctx,path){
	var a = "http://" + window.location.host + ctx + path + "index.html";
	window.open(a);
}