startHighlight = function()
{
    if (document.all && document.getElementById)
    {
        navRoot = document.getElementById("ctl00_ContentPlaceHolder_MainContent_DataGrid_SearchResults");

        tbody = navRoot.childNodes[1];

        for (i = 0; i < tbody.childNodes.length -1; i++)
        {
            node = tbody.childNodes[i];

            if (node.nodeName == "TR")
            {
                node.onmouseover = function()
                {
                    this.className = "over";
                }

                node.onmouseout = function()
                {
                    this.className = this.className.replace("over", "");
                }
            }
        }
    }
}

window.onload = startHighlight;