if(document.images)
{
img1on=new Image(); 
img1on.src="images/homer.gif";
img2on=new Image(); 
img2on.src="images/about_h_hb.jpg";
img3on=new Image(); 
img3on.src="images/bumfgprocess2.jpg";
img4on=new Image(); 
img4on.src="images/buqualitypolicy2.jpg";
img5on=new Image(); 
img5on.src="images/buourgroup2.jpg";
img6on=new Image();
img6on.src="images/bucontactus2.jpg";
img7on=new Image();
img7on.src="images/bulinks2.jpg";
img8on=new Image(); 
img8on.src="images/buidkembali2.jpg";
img9on=new Image(); 
img9on.src="images/buidproduk2.jpg";
img10on=new Image(); 
img10on.src="images/buidproses2.jpg";
img11on=new Image(); 
img11on.src="images/buidkebijakanmt2.jpg";
img12on=new Image(); 
img12on.src="images/buidgrup2.jpg";
img13on=new Image();
img13on.src="images/buidhubungi2.jpg";
img14on=new Image();
img14on.src="images/buidsambungan2.jpg";
img15on=new Image();
img15on.src="images/steelproducts2.jpg";

img1off=new Image(); 
img1off.src="images/homeb.gif";
img2off=new Image(); 
img2off.src="images/buproduct1.jpg";
img3off=new Image(); 
img3off.src="images/bumfgprocess1.jpg";
img4off=new Image(); 
img4off.src="images/buqualitypolicy1.jpg";
img5off=new Image(); 
img5off.src="images/buourgroup1.jpg";
img6off=new Image();
img6off.src="images/bucontactus1.jpg";
img7off=new Image();
img7off.src="images/bulinks1.jpg";
img8off=new Image(); 
img8off.src="images/buidkembali1.jpg";
img9off=new Image(); 
img9off.src="images/buidproduk1.jpg";
img10off=new Image(); 
img10off.src="images/buidproses1.jpg";
img11off=new Image(); 
img11off.src="images/buidkebijakanmt1.jpg";
img12off=new Image(); 
img12off.src="images/buidgrup1.jpg";
img13off=new Image();
img13off.src="images/buidhubungi1.jpg";
img14off=new Image();
img14off.src="images/buidsambungan1.jpg";
img15off=new Image();
img15off.src="images/steelproducts1.jpg";
}

function imgOn(imgName) {
if(document.images){
	document[imgName].src=eval(imgName + "on.src");
	}
}

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