function Zoom(imgFile)
{
	var scrS=500;
	var scrW=screen.width;
	var scrY=screen.height;
	if(scrY>scrW)
		scrS=scrW;
	else
		scrS=scrY;
	scrS=scrS/2;
	var newWindow=window.open("/cgi-bin/whiteboardimg.pl?id=holdenplant&img="+imgFile,"Zoom");
}