      <!--
      
      if (document.images) {
        image1on = new Image();
        image1on.src = "buttons/home_on.jpg";      
        image2on = new Image();
        image2on.src = "buttons/sales_on.jpg";      
        image3on = new Image();
        image3on.src = "buttons/sysrent_on.jpg";        
        image4on = new Image();
        image4on.src = "buttons/backrent_on.jpg";        
        image5on = new Image();
        image5on.src = "buttons/clients_on.jpg";		
		image6on = new Image();
        image6on.src = "buttons/tech_on.jpg";
        image7on = new Image();
        image7on.src = "buttons/contact_on.jpg";
        image1off = new Image();
        image1off.src = "buttons/home_off.jpg";           
        image2off = new Image();
        image2off.src = "buttons/sales_off.jpg";           
        image3off = new Image();
        image3off.src = "buttons/sysrent_off.jpg";           
        image4off = new Image();
        image4off.src = "buttons/backrent_off.jpg";          
        image5off = new Image();
        image5off.src = "buttons/clients_off.jpg";		
		image6off = new Image();
        image6off.src = "buttons/tech_off.jpg";
        image7off = new Image();
        image7off.src = "buttons/contact_off.jpg";
                
             
      }
      
      function turnOn(imageName) {
        if (document.images) {
          document[imageName].src = eval(imageName + "on.src");
        }
      }
      
      function turnOff(imageName) {
        if (document.images) {
          document[imageName].src = eval(imageName + "off.src");
        }
      }
      
      // -->