var bIsNC4 = (navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 4);
var bIsIE4 = (navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 );
var bIsSupportOK = bIsNC4 || bIsIE4;

var nMaxItem = 4;
var NameIndex = 0;
var DefaultState = 1;
var MouseOverState = 2;
var MouseDownState = 3;

var imgCounter = 0;
var ImageList = new Array();

function AddImageToImageList(name, Default, MouseOver, MouseDown)
{
    ImageList[imgCounter] = new Array(nMaxItem);
    ImageList[imgCounter][NameIndex] = name;
    ImageList[imgCounter][DefaultState] = new Image();
    ImageList[imgCounter][DefaultState].src = Default;
    if (MouseOver != "") {
        ImageList[imgCounter][MouseOverState] = new Image();
        ImageList[imgCounter][MouseOverState].src = MouseOver;
    }
    if (MouseDown != "") {
        ImageList[imgCounter][MouseDownState] = new Image();
        ImageList[imgCounter][MouseDownState].src = MouseDown;
    }

    imgCounter++;
}

function ReplaceImage(name, state)
{
    if (bIsSupportOK) {
        for (i = 0; i < imgCounter; i++) {
            if (document.images[ImageList[i][NameIndex]] != null) {
                if ((name == ImageList[i][NameIndex]) && (ImageList[i][state] != null))
                    document.images[name].src = ImageList[i][state].src;
            }
        }
    }
}
AddImageToImageList("rollover1", "images/navig/main06_10_normal.gif", "images/navig/main06_10_over.gif", "");
AddImageToImageList("rollover2", "images/navig/main06_51_normal.gif", "images/navig/main06_51_over.gif", "");
AddImageToImageList("rollover3", "images/navig/main06_56_normal.gif", "images/navig/main06_56_over.gif", "");
AddImageToImageList("rollover4", "images/navig/main06_59_normal.gif", "images/navig/main06_59_over.gif", "");
AddImageToImageList("rollover5", "images/navig/main06_62_normal.gif", "images/navig/main06_62_over.gif", "");
AddImageToImageList("rollover6", "images/navig/main06_68_normal.gif", "images/navig/main06_68_over.gif", "");
AddImageToImageList("rollover7", "images/navig/main06_71_normal.gif", "images/navig/main06_71_over.gif", "");
AddImageToImageList("rollover8", "images/navig/main06_77_normal.gif", "images/navig/main06_77_over.gif", "");
AddImageToImageList("rollover9", "images/navig/main06_80_normal.gif", "images/navig/main06_80_over.gif", "");
AddImageToImageList("rollover10", "images/navig/main06_83_normal.gif", "images/navig/main06_83_over.gif", "");
AddImageToImageList("rollover11", "images/navig/main06_89_normal.gif", "images/navig/main06_89_over.gif", "");
AddImageToImageList("rollover12", "images/navig/main06_92_normal.gif", "images/navig/main06_92_over.gif", "");