function newImage( imgSrc ){

 var imgName = new Image();
 imgName.src = imgSrc;

 return imgName;

}

function change( imgName, imgLocation )
{
 document[imgName].src = imgLocation ;
}

var preloadFlag = false;
function loadImages()
{
 if (document.images)
 {
 //****Edit this list to include rollover state images ****
 //****Example: aboutus_over = newImage( "images/aboutus-over.gif" );
 buy_over = newImage("/images/layout/buy-button-on.gif");
 sell_over = newImage("/images/layout/sell-button-on.gif");
 fore_over = newImage("/images/layout/fore-button-on.gif");
 short_over = newImage("/images/layout/short-button-on.gif");
 hud_over = newImage("/images/layout/hud-button-on.gif");

 preloadFlag = true;
 }
}