//preload images
	
	start = new Image(65, 23); start.src="images/start.gif";
	track = new Image(89, 23); track.src="images/track.gif";
	bullet = new Image(105, 23); bullet.src="images/bullet.gif";
	pit = new Image(72, 23); pit.src="images/pit.gif";
	functions = new Image(87, 23); functions.src="images/functions.gif";
	info = new Image(116, 23); info.src="images/info.gif";
	vt = new Image(100, 23); vt.src="images/vt.gif";
	tvc = new Image(118, 23); tvc.src="images/tvc.gif";
	
	starton = new Image(65, 23); starton.src="images/starton.gif";
	trackon = new Image(89, 23); trackon.src="images/trackon.gif";
	bulleton = new Image(105, 23); bulleton.src="images/bulleton.gif";
	piton = new Image(72, 23); piton.src="images/piton.gif";
	functionson = new Image(87, 23); functionson.src="images/functionson.gif";
	infoon = new Image(116, 23); infoon.src="images/infoon.gif";
	vton = new Image(100, 23); vton.src="images/vton.gif";
	tvcon = new Image(118, 23); tvcon.src="images/tvcon.gif";
	
	header = new Image(760, 100); header.src="images/header.jpg";
	header_index = new Image(760, 100); header_index.src="images/header-index.jpg";
	header_track = new Image(760, 100); header_track.src="images/header-track.jpg";
	header_bullet = new Image(760, 100); header_bullet.src="images/header-bullet.jpg";
	header_pit = new Image(760, 100); header_pit.src="images/header-pit.jpg";
	
	trackhotspot = new Image(332, 194); trackhotspot.src="images/track7.gif";
	
	trackhotspot8on = new Image(332, 194); trackhotspot8on.src="images/track8.gif";
	trackhotspot9on = new Image(332, 194); trackhotspot9on.src="images/track9.gif";
	trackhotspot10on = new Image(332, 194); trackhotspot10on.src="images/track10.gif";
	trackhotspot11on = new Image(332, 194); trackhotspot11on.src="images/track11.gif";

function SwitchGif(imgDocID,ImgObjName)
     {
       document.images[imgDocID].src = eval(ImgObjName + ".src")
     }


// popper //
	 
function openWin(url,BKT,settings)
{
settings = "scrollbars=no,menubars=no,toolbars=no,resizable=no,status=yes";
mywin=window.open(url,'BKT',settings);
}

function getImageFileName(pic)
                        {
                                var idx = document.URL.indexOf('?');
                                var params = new Array();
                                if (idx != -1) 
                                {
                                        var pairs = document.URL.substring(idx+1, document.URL.length).split('&');
                                        for (var i=0; i<pairs.length; i++) 
                                        {
                                                nameVal = pairs[i].split('=');
                                                params[nameVal[0]] = nameVal[1];
                                        }
                                }
                                return params["pic"];
                        }