// image button highlighting
		if (document.images) {

			// productions
	        var n_products_lo = new Image();
		    var n_products_hi = new Image();
			n_products_lo.src = "img/n_products_lo.gif";
        	n_products_hi.src = "img/n_products_hi.gif";

			// gallery
	        var n_gallery_lo = new Image();
		    var n_gallery_hi = new Image();
			n_gallery_lo.src = "img/n_gallery_lo.gif";
        	n_gallery_hi.src = "img/n_gallery_hi.gif";

			// contact
	        var n_contact_lo = new Image();
		    var n_contact_hi = new Image();
			n_contact_lo.src = "img/n_contact_lo.gif";
        	n_contact_hi.src = "img/n_contact_hi.gif";

			// about us
	        var n_about_lo = new Image();
		    var n_about_hi = new Image();
			n_about_lo.src = "img/n_about_lo.gif";
        	n_about_hi.src = "img/n_about_hi.gif";

			// about solid surface
	        var n_surface_lo = new Image();
		    var n_surface_hi = new Image();
			n_surface_lo.src = "img/n_surface_lo.gif";
        	n_surface_hi.src = "img/n_surface_hi.gif";


        }
        function LoLite(imgName) {			
            if (document.images) 
              document[imgName].src = eval(imgName + '_lo.src')
        }
        function HiLite(imgName) {
            if (document.images)
              document[imgName].src = eval(imgName + '_hi.src')
        }