function float_window () {
cWidth=document.body.clientWidth;
cHeight=document.body.clientHeight;
sTop=document.body.scrollTop;
with(document.getElementById('contacts'))
	{width=404;
	 height=435;
	 style.visibility='visible';
	 style.left=(cWidth-width)/2;
	 style.top=((cHeight-height)/2)+sTop;
	}
}

function feedback_form () {
cWidth=document.body.clientWidth;
cHeight=document.body.clientHeight;
sTop=document.body.scrollTop;
with(document.getElementById('feedback'))
	{width=430;
	 height=440;
	 style.visibility='visible';
	 style.left=(cWidth-width)/2;
	 style.top=((cHeight-height)/2)+sTop;
	}
}