function altrows()
{	var b, r, t = document.getElementsByTagName("TABLE");
	for(var i=0; i<t.length; i++)
	{	var current_t = t[i];
		if(current_t.className && current_t.className == "zebra")
		{	b = current_t.getElementsByTagName("TBODY");
			for(var j=0; j<b.length; j++)
			{	var current_b = b[j];
				r = current_b.getElementsByTagName("TR");
				for(var k=1; k<r.length; k+=2)
				{	
					r[k].className = "shade";
					td = r[k].getElementsByTagName("TD");
					for(var v=0; v<td.length; v++)
					{	td[v].className = "shade";
					}
				}
			}
		}
	}
}