var preloaded = [];
		function init() {


			//==========================================================================================

			if (mtDropDown.isSupported()) {
				mtDropDown.initialize();

				menu1.onactivate = function() {
				changeImages('products', 'images/but_about_on.gif');
				 };
				menu1.onmouseover = function() {
				changeImages('products', 'images/but_about_on.gif');
				 };				 
				menu1.ondeactivate = function() {
				changeImages('products', 'images/but_about_off.gif');
				};
				
				menu2.onactivate = function() {
				changeImages('services', 'images/but_capabilities_on.gif');
				 };
				menu2.onmouseover = function() {
				changeImages('services', 'images/but_capabilities_on.gif');
				 };
				menu2.ondeactivate = function() {
				changeImages('services', 'images/but_capabilities_off.gif');
				}
				menu3.onactivate = function() {
				changeImages('ourwork', 'images/but_work_on.gif');
				 };
				menu3.onmouseover = function() {
				changeImages('ourwork', 'images/but_work_on.gif');
				 };
				menu3.ondeactivate = function() {
				changeImages('ourwork', 'images/but_work_off.gif');
				};				

			}
		}

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_products_over = newImage("images/but_about_on.gif");
		nav_service_over = newImage("images/but_capabilities_on.gif");
		nav_work_over = newImage("images/but_work_on.gif");
		preloadFlag = true;
	}
}