if (document.images) {

// Active Images    
            img0on = new Image(); 
            img0on.src = "./images/btn_0_on.gif"; 

            img1on = new Image(); 
            img1on.src = "./images/btn_1_on.gif";  

            img2on = new Image();          
            img2on.src = "./images/btn_2_on.gif";       

            img3on = new Image(); 
            img3on.src = "./images/btn_3_on.gif";  

            img4on = new Image(); 
            img4on.src = "./images/btn_4_on.gif";  
			
            img5on = new Image(); 
            img5on.src = "./images/btn_5_on.gif";  
            
			img6on = new Image(); 
            img6on.src = "./images/btn_6_on.gif";  
			
			img7on = new Image(); 
            img7on.src = "./images/btn_7_on.gif";  
			
			img10on = new Image(); 
            img10on.src = "./images/btn_10_on.gif";  

			img11on = new Image(); 
            img11on.src = "./images/btn_11_on.gif";  

//off images
            img0off = new Image(); 
            img0off.src = "./images/btn_0_off.gif";  

            img1off = new Image(); 
            img1off.src = "./images/btn_1_off.gif";  

            img2off = new Image();          
            img2off.src = "./images/btn_2_off.gif";       

            img3off = new Image(); 
            img3off.src = "./images/btn_3_off.gif";  

            img4off = new Image(); 
            img4off.src = "./images/btn_4_off.gif";  
			
            img5off = new Image(); 
            img5off.src = "./images/btn_5_off.gif";  
						
            img6off = new Image(); 
            img6off.src = "./images/btn_6_off.gif";
			
            img7off = new Image(); 
            img7off.src = "./images/btn_7_off.gif";			
			
			img10off = new Image(); 
            img10off.src = "./images/btn_10_off.gif";
			
			img11off = new Image(); 
            img11off.src = "./images/btn_11_off.gif";

        }

// Over link
function imgOn(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "on.src");
        }
}

// Out Link
function imgOff(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "off.src");
        }
}