function OpenWindow (uri, name, width, height)
{	
	var realWidth = width
	var realHeight = height
	var left = Math.round ((screen.width - realWidth) / 2)
	var top =  Math.round ((screen.height - realHeight) / 2) - 35

	var windowOptions = 'status=yes,menubar=no,toolbar=no'
	windowOptions += ',resizable=yes,scrollbars=yes,location=no'
	windowOptions += ',width='  + realWidth
	windowOptions += ',height=' + realHeight
	windowOptions += ',left='   + left
	windowOptions += ',top='    + top

	var win = window.open (uri, name, windowOptions)
	win.focus()
}