function preLoad()
{
  for (i=1; i<=4; i++) {
    count = Math.random()*1000000000000000000000;
    eval('image'+count+' = new Image()');
    eval('image'+count+'.src = "images/kkb_menu_0'+i+'.gif"');
    eval('image'+(count+20)+' = new Image()');
    eval('image'+(count+20)+'.src = "images/kkb_menu_0'+i+'-over.gif"');
  }

}

function imgOn(imgName) 
{
	 if (document.images)
	 {document[imgName].src = ("images/" + imgName + "-over.gif");}
}

function imgOff(imgName) 
{
	 if (document.images)
	 {document[imgName].src = ("images/" + imgName + ".gif");}
}