if (document.images)
   {
 
     pic1on= new Image(150,41);
     pic1on.src="images/js_but_aboutus_down.gif";  
     pic2on= new Image(150,41);
     pic2on.src="images/js_but_services_down.gif"; 
	 pic3on= new Image(150,41);
     pic3on.src="images/js_but_activities_down.gif"; 
	 pic4on= new Image(150,41);
     pic4on.src="images/js_but_contacts_down.gif";  
     pic5on= new Image(150,41);
     pic5on.src="images/js_but_volunteers_down.gif"; 
	 pic6on= new Image(150,41);
     pic6on.src="images/js_but_home_down.gif"; 

     pic1off= new Image(150,41);
     pic1off.src="images/js_but_aboutus_up.gif";
	 pic2off= new Image(150,41);
     pic2off.src="images/js_but_services_up.gif";
	 pic3off= new Image(150,41);
     pic3off.src="images/js_but_activities_up.gif";
	 pic4off= new Image(150,41);
     pic4off.src="images/js_but_contacts_up.gif";
	 pic5off= new Image(150,41);
     pic5off.src="images/js_but_volunteers_up.gif";
	 pic6off= new Image(150,41);
     pic6off.src="images/js_but_home_up.gif";
	 
     image_off= new Image(100,100);
     image_off.src="images/logo_color.gif";  
     
     image1= new Image(100,100);
     image1.src="images/js_aboutus2.jpg";
     image2= new Image(100,100);
     image2.src="images/js_services2.jpg";
     image3= new Image(100,100);
     image3.src="images/js_activities2.jpg";  
     image4= new Image(100,100);
     image4.src="images/js_contacts2.jpg";   
     image5= new Image(100,100);
     image5.src="images/js_volunteers2.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 change1(picName,imgName)
 {
   if (document.images)
    {
      imgOn=eval(imgName + ".src");
      document[picName].src= imgOn;
    }
 }