function preload(folder,type)
{
ch=false;
if (document.images)
{SrcArr = new Array ("bk_left","bk_menu","bk_right","bk_top1","bk_top2","main_title","menu_right","pic_left_menu","rings");
	ImgArr = new Array ();
	for (i in SrcArr)
	{
		ImgArr[i] = new Image ();
		ImgArr[i].src =folder+"/" + SrcArr[i] + "."+type;
	}
}
}