var PicWin = "undefined";

function ShowPic(Which, Orient) {
  if (PicWin == "undefined" || PicWin.closed == true) {
    if (Orient == 'klein') {
      PicWin = window.open("images/xl"+Which, "Pic_Win", "SCREENX=200,SCREENY=200,TOOLBAR=0,LOCATION=0,DIRECTORIES=0,STATUS=0,MENUBAR=0,SCROLLBARS=1,RESIZABLE=1,WIDTH=450,HEIGHT=300");
    }
    else {
    	if (Orient == 'gross') {
      	PicWin = window.open("images/xl"+Which, "Pic_Win", "SCREENX=200,SCREENY=200,TOOLBAR=0,LOCATION=0,DIRECTORIES=0,STATUS=0,MENUBAR=0,SCROLLBARS=1,RESIZABLE=1,WIDTH=535,HEIGHT=500");
      }
      else {
      	PicWin = window.open("images/xl"+Which, "Pic_Win", "SCREENX=200,SCREENY=200,TOOLBAR=0,LOCATION=0,DIRECTORIES=0,STATUS=0,MENUBAR=0,SCROLLBARS=1,RESIZABLE=1,WIDTH=400,HEIGHT=500");
      }
    }
  }
  else {
    if (Orient == 'klein') {
      PicWin.resizeTo(450,300);
      }
    else {
    	if (Orient == 'gross') {
      	PicWin.resizeTo(535,550);
    	}
      else {
      	PicWin.resizeTo(400,500);
    	}
    }
    PicWin.location.href="images/xl"+Which
    PicWin.focus();
  }
}