var ulock1 = true;
var ulock2 = true;
window.onload=show;

function show(id) {
	var d = document.getElementById(id);
	for (var i = 1; i<=1; i++) {
		if (document.getElementById('smenu'+i)) {document.getElementById('smenu'+i).style.display='none';}
	}
	if (d) {
	   d.style.display='block';
        }
}

function startShow(id){
	ulock1 = false;
	setTimeout("tryShow('"+ id + "');",300);	
}
function tryShow(id){
	if(ulock1==false){
 	   show(id);
	}
}

function startHide(){
	setTimeout("tryHide();",1000);	
}
function tryHide(){
	if(ulock1==true && ulock2==true){
	show();
	}
}

function lock(){
	ulock2 = false;
}
function unlock1(){
	ulock1 = true;
	startHide();
}
function unlock2(){
	ulock2 = true;
	startHide();
}

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

var preloadFlag = false;
function preloadImages() {
	if (document.images && (preloadFlag == false)) {
                preloadFlag = true;		        
		mainmenu01      = newImage("images/nav/nav_products.gif");
		mainmenu01_over = newImage("images/nav/nav_products_over.gif");
		mainmenu02      = newImage("images/nav/nav_ad.gif");	
		mainmenu02_over = newImage("images/nav/nav_ad_over.gif");	
		mainmenu03      = newImage("images/nav/nav_support.gif");
		mainmenu03_over = newImage("images/nav/nav_support_over.gif");
		mainmenu04      = newImage("images/nav/nav_buy.gif");
		mainmenu04_over = newImage("images/nav/nav_buy_over.gif");
	        title01         = newImage("images/home/newsletter.gif");
	        title02a        = newImage("images/home/v4_available.gif");
	        title02         = newImage("images/home/welcome.gif");
	        title03         = newImage("images/home/news.gif");
	        title04         = newImage("images/home/splash/image_oil.jpg");
		setTimeout("title3 = newImage('images/adf03/title_adf_v4.png');",2000);
		setTimeout("img2   = newImage('images/adf03/image_adf_new.jpg');",2000);
		setTimeout("title6 = newImage('images/adc03/title_adc_v4.png');",2010);
	        setTimeout("img3   = newImage('images/adc03/image_adc_new.jpg');",2010);
		setTimeout("title7 = newImage('images/ad/title_ad_long.gif');",2020);
	        setTimeout("img4   = newImage('images/ad/image_sine.jpg');",2020);
		setTimeout("title8 = newImage('images/support/title_support.gif');",2030);
		setTimeout("img5   = newImage('images/support/image_jump.jpg');",2030);
 		setTimeout("title9 = newImage('images/contact/title_contactus.gif');",2040);
 		setTimeout("title16 = newImage('images/contact/title_aboutus.png');",2040);
		setTimeout("img6   = newImage('images/contact/image_contact_people.jpg');",2040);
		setTimeout("title10= newImage('images/dep/title_sales.gif');",2050);
		setTimeout("title11= newImage('images/dep/title_supdep.gif');",2060);
		setTimeout("title12= newImage('images/dep/title_feedback.gif');",2070);
		setTimeout("img9   = newImage('images/dep/image_feedback.jpg');",2070);
		setTimeout("img10  = newImage('images/legal/image_legal.jpg');",2080);
		setTimeout("title14= newImage('images/privacy/title_privacy.gif');",2090);
		setTimeout("img11  = newImage('images/privacy/image_privacy.jpg');",2090);
		setTimeout("title17= newImage('images/sitemap/title_sitemap.png');",3000);
	}
	return 0;
}