// JavaScript Document

<!-- Image Rollover Functionality //-->

<!--

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		nav_home_over = newImage("images/nav_home-over.gif");
		nav_about_SDI_over = newImage("images/nav_about_SDI-over.gif");
		nav_products_over = newImage("images/nav_products-over.gif");
		nav_services_over = newImage("images/nav_services-over.gif");
		nav_standards_over = newImage("images/nav_standards-over.gif");
		nav_contact_over = newImage("images/nav_contact-over.gif");
		preloadFlag = true;
	}
}
var preloadFlag = true;

<!-- Toggle Menu Tree Functionality //-->

function toggleMenu(id) { 
	try {var e = document.getElementById(id);
	if (e == null) return;
	if (e.style.display != "none") 
		{e.style.display = "none";
		var e = document.getElementById("sign"+id).src = "images/arrow_close.png";
		} else { 
		e.style.display = "block";
		var e = document.getElementById("sign"+id).src = "images/arrow_open.png";
		}
	} 
	
catch (exception) {} }

function toggleMenuClose(id) { 
	try {var e = document.getElementById(id);
	if (e == null) return;
	if (e.style.display != "none") {
		e.style.display = "none";
		var e = document.getElementById("sign"+id).src = "images/arrow_close.png";
		} else { 
		e.style.display = "block";
		var e = document.getElementById("sign"+id).src = "images/arrow_open.png";
		}
	} 
	
catch (exception) {} }

// -->