if (document.images)
   {
     pic1on= new Image(51,24);
     pic1on.src="images/home_blue_button_3.gif"; 
     pic2on= new Image(51,24); 
     pic2on.src="images/home_glow.gif"; 
     
     pic1off= new Image(51,24);
     pic1off.src="images/home_blue_button_3.gif";
     pic2off= new Image(51,24);
     pic2off.src="images/home_blue_button_3.gif";
     
     pic3on= new Image(72,24);
     pic3on.src="images/profile_top_button.gif"; 
     pic4on= new Image(72,24); 
     pic4on.src="images/profile_top_button_glow.gif"; 
     
     pic3off= new Image(72,24);
     pic3off.src="images/profile_top_button.gif";
     pic4off= new Image(72,24);
     pic4off.src="images/profile_top_button.gif";
     
     pic5on= new Image(82,24);
     pic5on.src="images/research_top_button.gif"; 
     pic6on= new Image(82,24); 
     pic6on.src="images/research_top_button_glow.gif"; 
     
     pic5off= new Image(82,24);
     pic5off.src="images/research_top_button.gif";
     pic6off= new Image(82,24);
     pic6off.src="images/research_top_button.gif"; 

     pic7on= new Image(76,24);
     pic7on.src="images/funding_top_button.gif"; 
     pic8on= new Image(76,24); 
     pic8on.src="images/funding_top_button_glow.gif"; 
     
     pic7off= new Image(76,24);
     pic7off.src="images/funding_top_button.gif";
     pic8off= new Image(76,24);
     pic8off.src="images/funding_top_button.gif"; 

     pic9on= new Image(92,24);
     pic9on.src="images/directories_top_button.gif"; 
     pic10on= new Image(92,24); 
     pic10on.src="images/directories_top_button_glow.gif"; 
     
     pic9off= new Image(92,24);
     pic9off.src="images/directories_top_button.gif";
     pic10off= new Image(92,24);
     pic10off.src="images/directories_top_button.gif"; 
   
     pic11on= new Image(78,24);
     pic11on.src="images/facilities_top_button.gif"; 
     pic12on= new Image(78,24); 
     pic12on.src="images/facilities_top_button_glow.gif"; 
     
     pic11off= new Image(78,24);
     pic11off.src="images/facilities_top_button.gif";
     pic12off= new Image(78,24);
     pic12off.src="images/facilities_top_button.gif"; 

     pic13on= new Image(86,24);
     pic13on.src="images/resources_top_button.gif"; 
     pic14on= new Image(86,24); 
     pic14on.src="images/resources_top_button_glow.gif"; 
     
     pic13off= new Image(86,24);
     pic13off.src="images/resources_top_button.gif";
     pic14off= new Image(86,24);
     pic14off.src="images/resources_top_button.gif"; 
         
     pic15on= new Image(191,52);
     pic15on.src="images/gen_link_button_l.gif"; 
     pic16on= new Image(191,52); 
     pic16on.src="images/gen_link_button_l2.gif"; 
     
     pic15off= new Image(191,52);
     pic15off.src="images/gen_link_button_l.gif";
     pic16off= new Image(191,52);
     pic16off.src="images/gen_link_button_l.gif";

     pic17on= new Image(191,52);
     pic17on.src="images/gen_link_button_nr.gif"; 
     pic18on= new Image(191,52); 
     pic18on.src="images/gen_link_button_nr2.gif"; 
     
     pic17off= new Image(191,52);
     pic17off.src="images/gen_link_button_nr.gif";
     pic18off= new Image(191,52);
     pic18off.src="images/gen_link_button_nr.gif";
   }

function lightup(imgName)
 {
   if (document.images)
    {
      imgOn=eval(imgName + "on.src");
      document[imgName].src= imgOn;
    }
 }

function turnoff(imgName)
 {
   if (document.images)
    {
      imgOff=eval(imgName + "off.src");
      document[imgName].src= imgOff;
    }
 }