var NewWin=null;
 function NewWindow(sURL,windowname,theScrollbars,theResizable,theWidth,theHeight){
	 if(!NewWin){NewWin=window.open(sURL,windowname,"top=4,left=4,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars="+theScrollbars+",resizable="+theResizable+",width="+theWidth+",height="+theHeight);}	
		else{if(!NewWin.closed){NewWin.close();			
			}NewWin=window.open(sURL,windowname,"top=4,left=4,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars="+theScrollbars+",resizable="+theResizable+",width="+theWidth+",height="+theHeight);}}