var newwind=0

function showlayer(show,w,h){
	if(newwind && !newwind.closed){
		newwind.focus()
	}
	else{
		newwind = window.open('about:blank', 'popwin', 'width='+w+',height='+h+',scrollbars,resizable')
	}
	document.child.action = show
	document.child.submit()
}