// this function is needed to work around a bug in IE related to element attributes
/*function hasClass(obj)
{
    var result = false;
    if (obj.getAttributeNode("class") != null)
    {
        result = obj.getAttributeNode("class").value;
    }
    return result;
}*/

function zebraStripeTables()
{
    if (document.getElementById && document.getElementsByTagName)
    {
        // the flag we'll use to keep track of whether the current row is odd or even
        var even = false;

        // if arguments are provided to specify the colors of the even & odd rows, then use the them; otherwise use the following defaults:
        var evenColor = "#transparent";
        var oddColor = "#f1f1f1";

        // obtain all tables if no such table exists, abort
        var tables = document.getElementsByTagName("table");
        //if (!table) { return; }

        // and iterate through them...
        for (var g = 0; g < tables.length; g++)
        {
            // by definition, tables can have more than one <tbody> element, so we'll have to get the list of child <tbody> elements 
            var tbodies = tables[g].getElementsByTagName("tbody");

            // and iterate through them...
            for (var h = 0; h < tbodies.length; h++)
            {
                // find all the &lt;tr&gt; elements... 
                var trs = tbodies[h].getElementsByTagName("tr");

                // ... and iterate through them
                for (var i = 0; i < trs.length; i++)
                {
                    // avoid rows that have a class attribute or backgroundColor style
                    if (/*!hasClass(trs[i]) &&*/!trs[i].style.backgroundColor)
                    {
                        // get all the cells in this row...
                        var tds = trs[i].getElementsByTagName("td");

                        // and iterate through them...
                        for (var j = 0; j < tds.length; j++)
                        {
                            var mytd = tds[j];

                            // avoid cells that have a class attribute or backgroundColor style
                            if (/*!hasClass(mytd) &&*/!mytd.style.backgroundColor)
                            {
                                mytd.style.backgroundColor = even ? evenColor : oddColor;
                                mytd.style.border = "none";
                            }
                        }
                    }
                    // flip from odd to even, or vice-versa
                    even = !even;
                }
            }
        }
    }
}

function addLoadEvent(func)
{
    var oldonload = window.onload;
    if (typeof window.onload != 'function')
    {
        window.onload = func;
    }
    else {
        window.onload = function ()
        {
            if (oldonload)
            {
                oldonload();
            }
            func();
        }
    }
}

//addLoadEvent(hasClass);
addLoadEvent(zebraStripeTables);