<!--
    if (document.images) {
            step1on = new Image();      
            step1on.src = "images/how_it_works_images/1_on.gif"; 
            step2on = new Image();      
            step2on.src = "images/how_it_works_images/2_on.gif"; 
            step3on = new Image();      
            step3on.src = "images/how_it_works_images/3_on.gif"; 
            step4on = new Image();      
            step4on.src = "images/how_it_works_images/4_on.gif"; 
            step5on = new Image();      
            step5on.src = "images/how_it_works_images/5_on.gif"; 

            step1off = new Image();      
            step1off.src = "images/how_it_works_images/1_off.gif"; 
            step2off = new Image();      
            step2off.src = "images/how_it_works_images/2_off.gif"; 
            step3off = new Image();      
            step3off.src = "images/how_it_works_images/3_off.gif"; 
            step4off = new Image();      
            step4off.src = "images/how_it_works_images/4_off.gif"; 
            step5off = new Image();      
            step5off.src = "images/how_it_works_images/5_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");
        }
}

//-->