if (document.images) 
{ 

pic1on= new Image(195,25); 
pic1on.src="pics/index/index_explore_on.jpg"; 
pic1off= new Image(195,25); 
pic1off.src="pics/index/index_explore_off.jpg"; 

pic2on= new Image(195,25); 
pic2on.src="pics/index/index_find_on.jpg"; 
pic2off= new Image(195,25); 
pic2off.src="pics/index/index_find_off.jpg"; 

pic3on= new Image(195,25); 
pic3on.src="pics/index/index_suggest_on.jpg"; 
pic3off= new Image(195,25); 
pic3off.src="pics/index/index_suggest_off.jpg"; 

   }

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;
    }
 }

function clickdown(imgName) 
 { 
   if (document.images) 
    { 
      imgDown=eval(imgName + "down.src"); 
      document[imgName].src=imgDown; 
    } 
 }