// JavaScript Document

function resetAll() {
	triggerMenuOff("byIndustry");
	triggerMenuOff("byProduct");
	triggerMenuOff("support");
	triggerMenuOff("aboutUs");
	document.getElementById("top_nav_dropdown_spacer1").style.display="none";
	document.getElementById("top_nav_dropdown_spacer2").style.display="none";
	document.getElementById("top_nav_dropdown_spacer3").style.display="none";
	document.getElementById("top_nav_dropdown_spacer4").style.display="none";
}

function triggerMenuOff(myMenu) {
	var myFullTab = "top_nav_" + myMenu;
	var myFullMenu = "top_nav_dropdown_" + myMenu;
	var myLI=document.getElementById(myFullTab).getElementsByTagName("div")[0];
	if (myLI.className != 'top_nav_selected') {
		myLI.style.backgroundPosition="0px 0px";
	}
	var myMenuDiv=document.getElementById(myFullMenu);
	myMenuDiv.style.display="none";
}

function triggerMenuOn(myMenu) {
	resetAll();
	var myFullTab = "top_nav_" + myMenu;
	var myFullMenu = "top_nav_dropdown_" + myMenu;
	var myLI=document.getElementById(myFullTab).getElementsByTagName("div")[0];
	myLI.style.backgroundPosition="0px -30px";
	var myMenuDiv=document.getElementById(myFullMenu);
	myMenuDiv.style.display="block";
	document.getElementById("top_nav_dropdown_spacer1").style.display="block";
	document.getElementById("top_nav_dropdown_spacer2").style.display="block";
	document.getElementById("top_nav_dropdown_spacer3").style.display="block";
	document.getElementById("top_nav_dropdown_spacer4").style.display="block";
}