// JavaScript Document

 if (document.images)
   {
	 pic1on= new Image(19,19);
     pic1on.src="images/thumb_ad_on.jpg";
     
     pic1off= new Image(19,19);
     pic1off.src="images/thumb_ad_off.jpg";
	 
     pic2on= new Image(19,19);
     pic2on.src="images/thumb_base_on.jpg";
     
     pic2off= new Image(19,19);
     pic2off.src="images/thumb_base_off.jpg";
	 
	 pic3on= new Image(20,19);
     pic3on.src="images/thumb_corp_on.jpg";
     
     pic3off= new Image(20,19);
     pic3off.src="images/thumb_corp_off.jpg";
	 
	 pic4on= new Image(18,19);
     pic4on.src="images/thumb_education_on.jpg";
     
     pic4off= new Image(18,19);
     pic4off.src="images/thumb_education_off.jpg";
	 
	 pic5on= new Image(21,17);
     pic5on.src="images/thumb_finance_on.jpg";
     
     pic5off= new Image(21,17);
     pic5off.src="images/thumb_finance_off.jpg";
	 
	 pic6on= new Image(13,13);
     pic6on.src="images/thumb_law_on.jpg";
     
     pic6off= new Image(13,13);
     pic6off.src="images/thumb_law_off.jpg";
	 
	  pic7on= new Image(13,13);
     pic7on.src="images/thumb_retail_on.jpg";
     
     pic7off= new Image(13,13);
     pic7off.src="images/thumb_retail_off.jpg";
	 
	 pic8on= new Image(13,13);
     pic8on.src="images/thumb__show_on.jpg";
     
     pic8off= new Image(13,13);
     pic8off.src="images/thumb__show_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;
    }
 }