function GTools_InitMouseOver()
    {
        
        var colImg         = document.getElementsByTagName("IMG");
        var i;
        var iNumImages = 0;
        var strSrcOn;
        var strSrcOff;
        var arryImages = new Array();
        
        for (i=0; i < colImg.length; i++)
        {
            elemI = colImg.item(i);
            if (elemI.className == "GTools_MouseOver")
            {
                arryImages[iNumImages] = new Image();
                strSrcOff = String(elemI.src);
                strSrcOn = strSrcOff.replace(/_off/i, "_on");
                arryImages[iNumImages].src = strSrcOn;
                elemI.onmouseover = new Function("this.src='" + strSrcOn + "'");
                elemI.onmouseout =  new Function("this.src='" + strSrcOff + "'");
                iNumImages++;
            }
        }
    }