// JavaScript Document
function MM_openBrWindow(theURL,winName,features) 
{ 
	var hWnd =   window.open(theURL,winName,features);
	if ((document.window != null) && (!hWnd.opener))
		hWnd.opener = document.window;
}
ScreenWidth  = screen.width
ScreenHeight = screen.height
PopupWidth   = ScreenWidth-50
PopupHeight  = ScreenHeight-150
PopupLeft    = (ScreenWidth-PopupWidth)/2
PopupTop     = (ScreenHeight-PopupHeight)/2

function print_invoice(start_item_no,start_item_no_year,end_item_no,end_item_no_year)
{
	theURL = "/billing/admin/print_invoice/"+start_item_no+"/"+start_item_no_year+"/"+end_item_no+"/"+end_item_no_year;
	MM_openBrWindow(theURL,'PopupWindow','maximize=no,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,width='+PopupWidth+',height='+PopupHeight+',left='+PopupLeft+',top='+PopupTop);
}