window.onload = window_onload;

/* add any functions that need to run onload in here */
function window_onload()
{
    set_rollovers();
}

/*  =======================================================
    SET_ROLLOVERS
    loops through all images looking for class="ro"
    if found, adds onmouseover and onmouseout events

    // PNG rollovers in Opera 7.5 doesn't seem to work
*/
function set_rollovers()
{
    var path, img;
    if(document.getElementsByTagName)
    {
        var isie = /MSIE ((5\.5)|[6789])/.test(navigator.userAgent) && navigator.platform == "Win32" && !/Opera/.test(navigator.userAgent);
        var els = document.getElementsByTagName("IMG");
        for(var i=0,j=els.length;i<j;i++)
        {
            if(els[i].className == "ro")
            {
                // preload image
                path = els[i].src;
                img = new Image();
                img.src = path.substr(0,path.length-4) + '_o.' + path.substr(path.length-3,3);

                // attach event handlers
                els[i].onmouseover = function()
                {
                    var path;
                    if(isie && /\.png'/i.test(this.runtimeStyle.filter)){
                        path = this.runtimeStyle.filter;
                        path = path.substr(56,path.indexOf("'",56) - 56);
                        this.ofilter = this.runtimeStyle.filter;
                        this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft." +
					        "AlphaImageLoader(src='" + path.substr(0,path.length-4) + '_o.' + path.substr(path.length-3,3) + "',sizingMethod='scale')";
                    }else{
                        path = this.src;
                        this.osrc = path;
                        this.src = path.substr(0,path.length-4) + '_o.' + path.substr(path.length-3,3);
                    }

                };

                els[i].onmouseout = function()
                {
                    if(isie && /\.png'/i.test(this.runtimeStyle.filter)){
                        this.runtimeStyle.filter = this.ofilter;
                    }else{
                        if(this.osrc)this.src = this.osrc;
                    }
                };

            }
        }
    }
}


/* utility functions here */
function openWin(sImg, iWidth, iHeight)
{
	window.open('<?php echo $PHP_SELF; ?>?img=' + sImg, 'the_window', "width=" + iWidth + ",height=" + iHeight + ",resizable=yes,scrollbars=no");
}