if (document.images) {            // Active Images
			        img1on = new Image();      
			        img1on.src = "images/aboutbtno.gif";

				img2on = new Image();      
   			     img2on.src = "images/spiritbtno.gif";

				img3on = new Image();      
  			      img3on.src = "images/henbtno.gif";

				img4on = new Image();      
  			      img4on.src = "images/portfoliobtno.gif";

				img5on = new Image();      
  			      img5on.src = "images/landartbtno.gif";
	
      			 img1off = new Image(); 
       			 img1off.src = "images/aboutbtn.gif"; 

			 img2off = new Image(); 
       			 img2off.src = "images/spiritbtn.gif";
			
			 img3off = new Image(); 
       			 img3off.src = "images/henbtn.gif";

			 img4off = new Image(); 
       			 img4off.src = "images/portfoliobtn.gif";

			 img5off = new Image(); 
       			 img5off.src = "images/landartbtn.gif";}

			 



// Function to 'activate' images.
function imgOn(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "on.src");
        }
}

// Function to 'deactivate' images.
function imgOff(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "off.src");
        }
}