//-----曾亮华--www.0577hr.com//
//<![CDATA[

var tips; var theTop =500/*这是默认高度,越大越往下*/; var old = theTop;

function initFloatTips() {

tips = document.getElementById('scrolltop');

moveTips();

};

function moveTips() {

var tt=50;

if (window.innerHeight) {

pos = window.pageYOffset

}

else if (document.documentElement && document.documentElement.scrollTop) {

pos = document.documentElement.scrollTop

}

else if (document.body) {

pos = document.body.scrollTop;

}
//alert(pos);

pos=pos-tips.offsetTop+theTop;

pos=tips.offsetTop+pos/10;



if (pos < theTop)
{
 pos = theTop;
 tips.style.display="block";
}

if (pos != old) {

tips.style.top = pos+"px";
tt=1;
tips.style.display="block";

//alert(tips.style.top);
if(document.documentElement.scrollTop==0)
{
  tips.style.display="none";
}

}
old = pos;

setTimeout(moveTips,tt);
}

//!]]>

initFloatTips();