function Menu1_mouseOver(img) {
    img.src = img.src.replace(".png", "_h.png");
}

function Menu1_mouseOut(img) {
    img.src = img.src.replace("_h.png",".png");
}

function showModalProgress(base_element_ID) {

    var base_element = $("#" + base_element_ID);

    var top = "0px";
    var left = "0px";
    var width = "100%";
    var height = "100%";

    if (base_element) {
        var offset = base_element.offset();
        top = offset.top + "px";
        left = offset.left + "px";

        width = base_element.outerWidth() + "px";
        height = base_element.outerHeight() + "px";
    }

    // Create a new div and assign the width/height/top/left properties of the input
    var newdiv = $("<div />").css({
        'background-color': 'Gray',
        'filter': 'alpha(opacity=70)',
        'opacity': '0.7',
        'width': width,
        'height': height,
        'position': 'absolute',
        'top': top,
        'left': left,
        'z-index': '1000'
    });

    // Add the div to the body
    $('body').append(newdiv);

    return newdiv;
}