if (document.images)

{
    img1on = new Image();           // Active images
	img1on.src = "./images/link2_12.jpg";
   	img1off = new Image();           // Inactive images
	img1off.src = "./images/link1_12.jpg";
    
    img2on = new Image();           // Active images
	img2on.src = "./images/link2_14.jpg";
	img2off = new Image();           // Inactive images
	img2off.src = "./images/link1_14.jpg";
     
    img3on = new Image();           // Active images
	img3on.src = "./images/link2_15.jpg";
	img3off = new Image();           // Inactive images
	img3off.src = "./images/link1_15.jpg";
     
    img4on = new Image();           // Active images
	img4on.src = "./images/link2_16.jpg";
	img4off = new Image();           // Inactive images
	img4off.src = "./images/link1_16.jpg";
   
    img5on = new Image();           // Active images
	img5on.src = "./images/link2_17.jpg";
	img5off = new Image();           // Inactive images
	img5off.src = "./images/link1_17.jpg";
   
    img6on = new Image();           // Active images
	img6on.src = "./images/link2_18.jpg";
	img6off = new Image();           // Inactive images
	img6off.src = "./images/link1_18.jpg";   

    img7on = new Image();           // Active images
	img7on.src = "./images/link2_19.jpg";
	img7off = new Image();           // Inactive images
	img7off.src = "./images/link1_19.jpg";   

    img8on = new Image();           // Active images
	img8on.src = "./images/link4_01.jpg";
	img8off = new Image();           // Inactive images
	img8off.src = "./images/link3_01.jpg";   

    img9on = new Image();           // Active images
	img9on.src = "./images/link4_02.jpg";
	img9off = new Image();           // Inactive images
	img9off.src = "./images/link3_02.jpg";   

    img10on = new Image();           // Active images
	img10on.src = "./images/link4_04.jpg";
	img10off = new Image();           // Inactive images
	img10off.src = "./images/link3_04.jpg"; 
	
    img11on = new Image();           // Active images
	img11on.src = "./images/link4_05.jpg";
	img11off = new Image();           // Inactive images
	img11off.src = "./images/link3_05.jpg"; 	
}

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

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