if (document.images)
{
  pic1= new Image(110,30); pic1.src="images/contact_on.gif"; 
  pic2= new Image(110,30); pic1.src="images/customer_on.gif"; 
  pic3= new Image(110,30); pic1.src="images/download_on.gif"; 
  pic4= new Image(110,30); pic1.src="images/home_on.gif"; 
  pic5= new Image(110,30); pic1.src="images/products_on.gif"; 
  pic6= new Image(110,30); pic1.src="images/purchase_on.gif"; 
  pic7= new Image(110,30); pic1.src="images/support_on.gif"; 
}