if (document.images) { 

	img1on = new Image();      
	img1on.src = "/images/ilk_services_over.gif"; 
	img2on = new Image();      
	img2on.src = "/images/ilk_products_over.gif"; 
	img3on = new Image();      
	img3on.src = "/images/ilk_resources_over.gif"; 
	img4on = new Image();      
	img4on.src = "/images/ilk_about_over.gif"; 
	img5on = new Image();      
	img5on.src = "/images/ilk_contact_over.gif"; 
	img6on = new Image();      
	img6on.src = "/images/ilk_faq_over.gif"; 
	img7on = new Image();      
	
	img1off = new Image();      
	img1off.src = "/images/ilk_services_off.gif"; 
	img2off = new Image();      
	img2off.src = "/images/ilk_products_off.gif"; 			
	img3off = new Image();      
	img3off.src = "/images/ilk_resources_off.gif"; 		
	img4off = new Image();      
	img4off.src = "/images/ilk_about_off.gif"; 		
	img5off = new Image();      
	img5off.src = "/images/ilk_contact_off.gif"; 		
	img6off = new Image();      
	img6off.src = "/images/ilk_faq_off.gif"; 		
	img7off = new Image();      
  }

// Images turn on.

function imgOn(imgName) {

        if (document.images) {

            document[imgName].src = eval(imgName + "on.src");

        }

}

// Images turn off.

function imgOff(imgName) {

        if (document.images) {

            document[imgName].src = eval(imgName + "off.src");

        }

}