if (document.images)
{
 // Set width and height of all images
 var img_width=80;
 var img_height=15;
 
 // Set up "on" images (show up onmouseover)
 pic1on= new Image(img_width,img_height);
 pic1on.src="images/Home_on.jpg";
 pic2on= new Image(img_width,img_height);
 pic2on.src="images/Services_on.jpg";    
 pic3on= new Image(img_width,img_height);
 pic3on.src="images/Testimonials_on.jpg"; 
 pic4on= new Image(img_width,img_height);   
 pic4on.src="images/Qualifications_on.jpg";    
 pic5on= new Image(img_width,img_height);   
 pic5on.src="images/Contact_on.jpg";    
; 
 
 // Set "off" images (onmouseout)    
 pic1off= new Image(img_width,img_height);
 pic1off.src="images/Home_off.jpg";
 pic1off= new Image(img_width,img_height);
 pic1off.src="images/Home_off.jpg";
 pic2off= new Image(img_width,img_height);
 pic2off.src="images/Services_off.jpg";    
 pic3off= new Image(img_width,img_height);
 pic3off.src="images/Testimonials_off.jpg"; 
 pic4off= new Image(img_width,img_height);   
 pic4off.src="images/Qualifications_off.jpg";    
 pic5off= new Image(img_width,img_height);   
 pic5off.src="images/Contact_off.jpg";  
}

// Change the image
function changeImage(imgName,picobj)
{
  if (document.images)
  { 
	document.images[imgName].src= picobj.src;
  }
}