<!--
if(document.images){
	var offs = new Array();
	var onns = new Array();
	var path = "/eng/img/btn_";
	for(i=1;i<17;i++)
	{
		offs[i] = new Image();
		onns[i] = new Image();
		offs[i].src = path+i+".gif";
		onns[i].src = path+i+"_on.gif";
	}
}
	
function btn_on(img)
	{
	if(document.images)
					{
					var ImgNum = img;
					var ImgName = "btn"+ImgNum;
					ImgNum++;
					var NextName = "btn"+ImgNum;
					document.images[ImgName].src = onns[img].src;
					}
	}
function btn_hide(img)
	{
	if(document.images)
	{	var ImgName;
		ImgName = "btn"+img;
		document.images[ImgName].src = offs[img].src;
		}
	}
	
//-->