function float_window () {
cWidth=document.body.clientWidth;
cHeight=document.body.clientHeight;
sTop=document.body.scrollTop;
with(document.getElementById('contacts'))
	{width=452;
	 height=410;
	 style.visibility='visible';
	 style.left=(cWidth-width)/2+'px';
	 style.top=((cHeight-height)/2)+sTop+'px';
	}
}