function PhotoWin(StockNumber,ptype) {
      windowFeatures = 'width=650,height=607,toolbar=1,location=0,directories=0,status=0,menuBar=0,scrollBars=1,resizable=1,screenX=10,left=10,screenY=10,top=10';
      win = window.open('photo_window.asp?StockNumber='+StockNumber+'&ptype='+ptype,"PhotoWin",windowFeatures); 
}