var win1Open = null
	function openPopUp(windowURL, windowName, windowWidth, windowHeight){
  	var winHandle = window.open(windowURL,windowName,"toolbar=no,scrollbars=no,resizable=no,width=" + windowWidth + ",height=" + windowHeight)
  	return winHandle
  	}
	function winClose(){    // close all open pop-up windows   
  	if(win1Open != null) win1Open.close() 
        
  	}
	function openPopUpWindow(){}  // does nothing but required by JavaScript & shows in status bar