document.write("<div id='top_b' style='position:absolute;  visibility:show; left:980px;'>				");	
document.write("		<a href='#top'>																	");
document.write("	<img src='images/btn_top.gif' border='0'></a>			");
document.write("</div>																					");

function top_b()
{
	document.all.top_b.style.pixelTop = document.body.clientHeight + document.body.scrollTop - 100;
}

function right_top_controll()
{
	document.all.top_b.style.pixelTop = document.body.clientHeight - 100;
}

function top_init()
{
	document.all.top_b.style.pixelTop = document.body.clientHeight - 100;
}

setInterval("top_b()",100);
onresize = right_top_controll;