function preloadImages() {
	//alert("hallo");
	
	
	

	pic1= new Image(100,25); 
	pic1.src="files/top_nav_01.gif"; 
	
	pic2= new Image(240,55); 
	pic2.src="files/top_nav_02.gif"; 

	pic3= new Image(88,31); 
	pic3.src="files/top_nav_03.gif";
	
	pic4= new Image(100,25); 
	pic4.src="files/top_nav_up_01.gif"; 
	
	pic5= new Image(240,55); 
	pic5.src="files/top_nav_up_02.gif"; 

	pic6= new Image(88,31); 
	pic6.src="files/top_nav_up_03.gif"; 

	
	myInt= new Object();
	myInt.y = window.setInterval('checkImage()', 1000);
	
	/*var img = pic1;*/

	allImages = new Array(pic1,pic2,pic3,pic4,pic5,pic6);
	



}

function checkImage() {
		var img = myInt.image;
		/*alert(document.getElementById("Nav_1_a").complete);*/
	
		var loadedImages = 0;
		
		for (var i = 0; i < allImages.length; i++) {
			var img = allImages[i];
			if (typeof img.naturalWidth != "undefined" && img.naturalWidth == 0) {
				//alert("false"+i);
			}
			else{
				//alert("true "+i);
				loadedImages++;
			}
		}
		
		if (loadedImages == allImages.length ) {
			//alert("allloaded ");
			window.clearInterval(myInt.y);			
			document.getElementById("wrapper").className = "visible";
		}
}