function screenshot(parent, obj, func)
{
	if(func == "open")
	{
		par = document.getElementById(parent)
		chi = document.getElementById(obj)
		absoluteTop = par.offsetTop + par.offsetParent.offsetTop
		chi.style.top = (absoluteTop - 200) + "px"
		chi.style.display = ""
	}
	else if(func == "close")
	{
		chi = document.getElementById(obj)
		chi.style.display = "none"
	}
}