function PopupScreenCentre(url,name,width,height,scrollbars) 
{
	var titleBarHeight, windowBorderWidth
	titleBarHeight = 24
	windowBorderWidth = 4

	var screenWidth, screenHeight
	screenWidth = 800
	screenHeight = 600

	if (window.screen) 
  {
		if (window.screen.availWidth) 
    {
			// ok browser has the appropriate properties we need to centre it
			screenWidth = window.screen.availWidth
			screenHeight = window.screen.availHeight
		}
	}

	var windowWidth = windowBorderWidth + width + windowBorderWidth
	var windowHeight = titleBarHeight + height + windowBorderWidth

	var l = (screenWidth - windowWidth) / 2
	var t = (screenHeight - windowHeight) / 2

	// browser bug workaround - opens from wrong location
	var func = window.open
	var win = func(url,name,'left='+l+',top='+t+',screenX='+l+',screenY='+t+',width='+width+',height='+height+',scrollbars='+scrollbars+',resizable=0,toolbar=0,location=0,directories=0,status=0,menubar=0,copyhistory=0')
	win.opener = this
}

function processAjax(commandURL)
{
  var PN="processAjax"
  var result = false // = ""
	var obj = document.getElementById('ajax')
	if(obj)
	{
		obj.src = commandURL
	}
  return result
}