<!--
if (document.images) {            // Active Images

            c1on = new Image();      
            c1on.src = "images_portfolio/c1_btn_on.gif";
            
            c2on = new Image();      
            c2on.src = "images_portfolio/c2_btn_on.gif";
            
            c3on = new Image();      
            c3on.src = "images_portfolio/c3_btn_on.gif";
            
            c4on = new Image();      
            c4on.src = "images_portfolio/c4_btn_on.gif";
            
            c5on = new Image();      
            c5on.src = "images_portfolio/c5_btn_on.gif";
            
            c6on = new Image();      
            c6on.src = "images_portfolio/c6_btn_on.gif";
            
            c7on = new Image();      
            c7on.src = "images_portfolio/c7_btn_on.gif";
            
            c8on = new Image();      
            c8on.src = "images_portfolio/c8_btn_on.gif";
            
            c9on = new Image();      
            c9on.src = "images_portfolio/c9_btn_on.gif";
            
            c10on = new Image();      
            c10on.src = "images_portfolio/c10_btn_on.gif";
            
          
            c1off = new Image();      
            c1off.src = "images_portfolio/c1_btn_off.gif";
            
            c2off = new Image();      
            c2off.src = "images_portfolio/c2_btn_off.gif";
            
            c3off = new Image();      
            c3off.src = "images_portfolio/c3_btn_off.gif";
            
            c4off = new Image();      
            c4off.src = "images_portfolio/c4_btn_off.gif";
            
            c5off = new Image();      
            c5off.src = "images_portfolio/c5_btn_off.gif";
            
            c6off = new Image();      
            c6off.src = "images_portfolio/c6_btn_off.gif";
            
            c7off = new Image();      
            c7off.src = "images_portfolio/c7_btn_off.gif";
            
            c8off = new Image();      
            c8off.src = "images_portfolio/c8_btn_off.gif";
            
            c9off = new Image();      
            c9off.src = "images_portfolio/c9_btn_off.gif";
            
            c10off = new Image();      
            c10off.src = "images_portfolio/c10_btn_off.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");
        }
}

// -->