//scrolling
var fastScrolling=0;
function _gotop() {	
	if (fastScrolling!=0) 
		scrollTo(0,0);
	else{
		var ts=0;
		if (document.layers) 
			ts=window.pageYOffset;
		else if (document.body.scrollTop)
			ts=document.body.scrollTop;
		else
			ts=window.pageYOffset;
		if (ts>0){
			var nv=(ts-5)*0.2;
			if (nv<1) nv=1;
			scrollBy(0,-nv);
			setTimeout("_gotop()",20);
		}
	}
}