function fixbottom() {
	var left = dgei("leftNav");
	var right = dgei("rhs");
	var lhs = (findXY(left))["y"] + left.offsetHeight;
	var rhs = (findXY(right))["y"] + right.offsetHeight;
	var ftr = (findXY(dgei("footer")))["y"];
	var cmp;
	(lhs>rhs) ? cmp = lhs : cmp = rhs;
	if ( cmp > ftr ) {
		var cnt = dgei("content");	
		var cntbtm = (findXY(cnt))["y"] + cnt.offsetHeight;
//		alert(cntbtm);
		var diff = cmp - cntbtm;
		var d = dgei("padd");
		d.style.display = "block";
		d.style.paddingTop = diff + "px";
	}
}