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if (document.images != null)
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function preLoad()
{      
        nav1_up = new Image(130,15);
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        nav1_up.src = "images/training.jpg";
        nav1_dn.src = "images/training-on.jpg";
		
        nav2_up = new Image(130,15);
        nav2_dn = new Image(130,15);
        nav2_up.src = "images/equipment.jpg";
        nav2_dn.src = "images/equipment-on.jpg";
		
        nav3_up = new Image(130,15);
        nav3_dn = new Image(130,15);
        nav3_up.src = "images/technology.jpg";
        nav3_dn.src = "images/technology-on.jpg";
			
		nav4_up = new Image(130,15);
        nav4_dn = new Image(130,15);
        nav4_up.src = "images/consulting.jpg";
        nav4_dn.src = "images/consulting-on.jpg";
		
	    nav5_up = new Image(130,15);
        nav5_dn = new Image(130,15);
        nav5_up.src = "images/sub-training.jpg";
        nav5_dn.src = "images/sub-training-on.jpg";	
		
	    nav6_up = new Image(130,15);
        nav6_dn = new Image(130,15);
        nav6_up.src = "images/sub-equipment.jpg";
        nav6_dn.src = "images/16-hoist.jpg";	
		
	    nav7_up = new Image(130,15);
        nav7_dn = new Image(130,15);
        nav7_up.src = "images/sub-technology.jpg";
        nav7_dn.src = "images/sub-technology-on.jpg";	
		
	    nav8_up = new Image(130,15);
        nav8_dn = new Image(130,15);
        nav8_up.src = "images/sub-consulting.jpg";
        nav8_dn.src = "images/sub-consulting-on.jpg";
		
		nav9_up = new Image(130,15);
        nav9_dn = new Image(130,15);
        nav9_up.src = "images/sub-brochure.jpg";
        nav9_dn.src = "images/sub-brochure-on.jpg";

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function rollover(img,what)
{
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