preload_img1=new Image();preload_img1.src="top_pic1.jpg";
preload_img2=new Image();preload_img2.src="top_pic2.jpg";
preload_img3=new Image();preload_img3.src="top_pic3.jpg";
preload_img4=new Image();preload_img4.src="top_pic4.jpg";
preload_img5=new Image();preload_img5.src="top_pic5.jpg";
preload_img6=new Image();preload_img6.src="top_pic6.jpg";

preload_icon1=new Image();preload_icon1.src="icon_1b.gif";
preload_icon2=new Image();preload_icon2.src="icon_2b.gif";
preload_icon3=new Image();preload_icon3.src="icon_3b.gif";
preload_icon4=new Image();preload_icon4.src="icon_4b.gif";
preload_icon5=new Image();preload_icon5.src="icon_5b.gif";
preload_icon6=new Image();preload_icon6.src="icon_6b.gif";

function swImg(iName,str){
	document.images[iName].src = str;
}