var ns = (document.layers);
var ie = (document.all);

function openWindow(href, windowname, height, width, directories_yn, titlebar_yn, menubar_yn, toolbar_yn, scrollbars_yn, resizable_yn, location_yn, status_yn)
{

	var features="";
	var top = (screen.height - height)/2
	var left = (screen.width - width)/2
	
	if(ie)
	{
	features = "top=" + top
	features += ",left=" + left
	}
	else
	{
	features = "screenY=" + top
	features += ",screenX=" + left
	}
	features += ",height=" + height
	features += ",width=" + width
	features += ",directories=" + directories_yn
	features += ",titlebar=" + titlebar_yn
	features += ",menubar=" + menubar_yn
	features += ",toolbar=" + toolbar_yn
	features += ",scrollbars=" + scrollbars_yn
	features += ",resizable=yes"
	// + resizable_yn
	features += ",location=" + location_yn
	features += ",status=" + status_yn

	window.open(href,windowname,features)
}