function isIE5() { return (navigator.userAgent.indexOf("MSIE 5") > -1); }
function isIE6() { return ((navigator.userAgent.indexOf("MSIE 6") > -1) && (navigator.userAgent.indexOf("Opera") == -1)); }
function isIE() { return (isIE5() || isIE6());}

function fixpng()
{
    for (var i = 0; i < document.images.length; i++)
    {
        var img = document.images[i];
        imgSrc = img.src;
        if(imgSrc.substr(imgSrc.length-3).toLowerCase() == "png")
        {
            var w, h;
            w = img.width, h = img.height;
            img.src = "/images/sibwest/p1x1.gif";
            img.width = w, img.height = h;
            img.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'" + imgSrc + "\', sizingMethod='scale');";
        }
    }
}

var isIE = isIE();
if (isIE) window.attachEvent("onload", fixpng); 

function over_img_ind(id, img_o)
{
    if(isIE)
    {
        var img = document.getElementById("imi_"+id);
        imgSrc = img_o;
        if(imgSrc.substr(imgSrc.length-3).toLowerCase() == "png")
        {
            var w, h;
            w = img.width, h = img.height;
            img.src = "/images/sibwest/p1x1.gif";
            img.width = w, img.height = h;
            img.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'" + imgSrc + "\', sizingMethod='scale');";
        }
    }
}

function out_img_ind(id, img_o)
{
    if(isIE)
    {
        var img = document.getElementById("imi_"+id);
        imgSrc = img_o;
        if(imgSrc.substr(imgSrc.length-3).toLowerCase() == "png")
        {
            var w, h;
            w = img.width, h = img.height;
            img.src = "/images/sibwest/p1x1.gif";
            img.width = w, img.height = h;
            img.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'" + imgSrc + "\', sizingMethod='scale');";
        }
    }
}