var imageDir =  "Images/";

if (document.images) {
												
			   img00on = new Image();
               img00on.src = imageDir + "btn_home_on.gif";               
			   img01on = new Image();
               img01on.src = imageDir + "btn_about_on.gif";
			   img02on = new Image();
               img02on.src = imageDir + "btn_contact_on.gif";
			   img03on = new Image();
               img03on.src = imageDir + "btn_login_on.gif";
			   img04on = new Image();
               img04on.src = imageDir + "btn_clients_on.gif";
			   img05on = new Image();
               img05on.src = imageDir + "btn_assessment_on.gif";
			   img06on = new Image();
               img06on.src = imageDir + "btn_resources_on.gif";
			   img07on = new Image();
               img07on.src = imageDir + "btn_contact_on.gif";
               img08on = new Image();
               img08on.src = imageDir + "btn_login_on.gif";
               
               img00off = new Image();
               img00off.src = imageDir + "btn_home_off.gif";
               img01off = new Image();
               img01off.src = imageDir + "btn_about_off.gif";
			   img02off = new Image();
               img02off.src = imageDir + "btn_contact_off.gif";
			   img03off = new Image();
               img03off.src = imageDir + "btn_login_off.gif";
			   img04off = new Image();
               img04off.src = imageDir + "btn_clients_off.gif";
			   img05off = new Image();
               img05off.src = imageDir + "btn_assessment_off.gif";
			   img06off = new Image();
               img06off.src = imageDir + "btn_resources_off.gif";
			   img07off = new Image();
               img07off.src = imageDir + "btn_contact_off.gif";
			   img08off = new Image();
               img08off.src = imageDir + "btn_login_off.gif";
			   
		    }
           function imgOn(imgName) 
           {    
               if (document.images) 
               {
                   document[imgName].src = eval(imageDir + imgName + "on.src");
               }
           }
           
           function imgOff(imgName) 
           {
               if (document.images) 
               {
                   document[imgName].src = eval(imageDir + imgName + "off.src");        
               }
           }
                      
           function printPage()
           {
               window.print()
           }
           
           function bookmarkPage(url)
           {
                var title = document.title
                if (document.all)
                window.external.AddFavorite(url, title);
                else if (window.sidebar)
                window.sidebar.addPanel(title, url, "")
           }