var flag = false;

function imageload() {  // called with onLoad()
    if (document.images) {
        img1on = new Image(); img1on.src = "../img/btn_freetrial_roll.gif";
        img2on = new Image(); img2on.src = "../img/btn_findoutmore_roll.gif";
	    img3on = new Image(); img3on.src = "../img/btn_registernow_roll.gif";
	    img4on = new Image(); img4on.src = "../img/btn_registernow_roll.gif";
	    img5on = new Image(); img5on.src = "img/btn_registernow_home_roll.gif";
	    img6on = new Image(); img6on.src = "../img/btn_downloadnow_roll.gif";
        img7on = new Image(); img7on.src = "img/btn_freetrial_roll.gif";
        img8on = new Image(); img8on.src = "..img/ss_discovery_on.jpg";
        img9on = new Image(); img9on.src = "..img/ss_discovery_on.jpg";
	    img10on = new Image(); img10on.src = "img/btn_registernow_roll.gif";
        img11on = new Image(); img11on.src = "img/btn_findoutmore_roll.gif";
        img12on = new Image(); img12on.src = "../../img/btn_freetrial_roll.gif";
	    img13on = new Image(); img13on.src = "../../img/btn_registernow_roll.gif";
        return (flag = true);  // set the flag and let the function know know it can work
    }
}

if (document.images) {   // load the off images 
	img1off = new Image(); img1off.src = "../img/btn_freetrial.gif";
	img2off = new Image(); img2off.src = "../img/btn_findoutmore.gif";
	img3off = new Image(); img3off.src = "../img/btn_registernow.gif";
	img4off = new Image(); img4off.src = "../img/btn_registernow.gif";
	img5off = new Image(); img5off.src = "img/btn_registernow_home.gif";
	img6off = new Image(); img6off.src = "../img/btn_downloadnow.gif";
	img7off = new Image(); img7off.src = "img/btn_freetrial.gif";
	img8off = new Image(); img8off.src = "..img/ss_main.jpg";
	img9off = new Image(); img9off.src = "..img/ss_main.jpg";
	img10off = new Image(); img10off.src = "img/btn_registernow.gif";
	img11off = new Image(); img11off.src = "img/btn_findoutmore.gif";
	img12off = new Image(); img12off.src = "../../img/btn_freetrial.gif";
	img13off = new Image(); img13off.src = "../../img/btn_registernow.gif";
}


function rollin(imgName) {
    if (document.images && (flag == true)) {
        document[imgName].src = eval(imgName + "on.src");
    }
}

function rollout(imgName) {  // the normal onMouseOut function
    if (document.images){
        document[imgName].src = eval(imgName + "off.src");
    }
}