Rollimage = new Array()
Rollimage[0]= new Image();
Rollimage[0].src = "images/nav/nav_2.jpg";
Rollimage[1]= new Image();
Rollimage[1].src = "images/nav/nav_3.jpg";
Rollimage[2]= new Image();
Rollimage[2].src = "images/nav/nav_4.jpg";
Rollimage[3]= new Image();
Rollimage[3].src = "images/nav/nav_5.jpg";
Rollimage[4]= new Image();
Rollimage[4].src = "images/nav/nav_6.jpg";
Rollimage[5]= new Image();
Rollimage[5].src = "images/nav/nav_7.jpg";
Rollimage[6] = new Image();
Rollimage[6].src = "images/nav/nav_8.jpg";

RollimageOn = new Array()
RollimageOn[0] = new Image();
RollimageOn[0].src = "images/nav/nav_2_on.jpg";
RollimageOn[1] = new Image();
RollimageOn[1].src = "images/nav/nav_3_on.jpg";
RollimageOn[2] = new Image();
RollimageOn[2].src = "images/nav/nav_4_on.jpg";
RollimageOn[3] = new Image();
RollimageOn[3].src = "images/nav/nav_5_on.jpg";
RollimageOn[4] = new Image();
RollimageOn[4].src = "images/nav/nav_6_on.jpg";
RollimageOn[5] = new Image();
RollimageOn[5].src = "images/nav/nav_7_on.jpg";
RollimageOn[6] = new Image();
RollimageOn[6].src = "images/nav/nav_8_on.jpg";  

function SwapOut(i){
    var e = "document.nav$ni$.src = RollimageOn[$ai$].src";
    e = e.replace("$ni$", i);
    e = e.replace("$ai$", i-1);
    eval(e);
    return true;
}
function SwapBack(i){
    var e = "document.nav$ni$.src = Rollimage[$ai$].src";
    e = e.replace("$ni$", i);
    e = e.replace("$ai$", i - 1);
    eval(e);
    return true;
}