var goto_top_type = -1;
var goto_top_itv = 0;

function goto_top_timer()
{
var y = goto_top_type == 1 ? document.documentElement.scrollTop : document.body.scrollTop;
var moveby = 35;

y -= Math.ceil(y * moveby / 100);
if (y < 0) {
y = 0;
}

if (goto_top_type == 1) {
document.documentElement.scrollTop = y;
}
else {
document.body.scrollTop = y;
}

if (y == 0) {
clearInterval(goto_top_itv);
goto_top_itv = 0;
}
}

function goto_top()
{
if (goto_top_itv == 0) {
if (document.documentElement && document.documentElement.scrollTop) {
goto_top_type = 1;
}
else if (document.body && document.body.scrollTop) {
goto_top_type = 2;
}
else {
goto_top_type = 0;
}

if (goto_top_type > 0) {
goto_top_itv = setInterval('goto_top_timer()', 50);
}
}
}
function ieFix(id)
 {
	elem = document.getElementById(id);
	var ie6 =document.all && (navigator.userAgent.toLowerCase().indexOf("msie 6.") != -1);
	if (ie6){
           var html =
              "<iframe style=\"position: absolute; display: block; " +
              "z-index: -1; width: 100%; height: 100%; top: 0; left: 0;" +
              "filter: mask(); background-color: #ffffff; \"></iframe>";
           if (elem) elem.innerHTML += html;
        };
 }