function float_window () {
cWidth=document.body.clientWidth;
cHeight=document.body.clientHeight;
sTop=document.body.scrollTop;
with(document.getElementById('contacts'))
	{width=480;
	 height=435;
	 style.visibility='visible';
	 style.left=(cWidth-480)/2;
	 style.top=((cHeight-435)/2)+sTop;
	}
}