var IE4 = (document.all) ? true : false;
  var NS4 = 1 - IE4
  var backgroundImageWidth = 800
  var buttonsWidth = 800
  var newLeft = 0
    
  function docjslib_getWindowWidth() {
    if (NS4) {return window.innerWidth}
    else     {return document.body.clientWidth}
  }
	
	function dobackgroundImage() {
	  newLeft = Math.floor((docjslib_getWindowWidth() - buttonsWidth) / 2)
	  document.getElementById("buttons").style.pixelLeft = newLeft	  
	  document.getElementById("buttons").style.visibility = "visible"
	  
	  newLeft = Math.floor((docjslib_getWindowWidth() - backgroundImageWidth) / 2)
	  document.getElementById("backgroundImage").style.pixelLeft = newLeft	  
	  document.getElementById("backgroundImage").style.visibility = "visible"
	}