function getStyle(el,styleProp)
{
  if (el.currentStyle)
    return(el.currentStyle[styleProp]);
  else
    return(document.defaultView.getComputedStyle(el, null).getPropertyValue(styleProp));
}

function getXMLHttpRequest()
{
  if(window.XMLHttpRequest)
  {
    // code for IE7+, Firefox, Chrome, Opera, Safari
    return(new XMLHttpRequest());
  }
  if(window.ActiveXObject)
  {
    // code for IE6, IE5
    return(new ActiveXObject("Microsoft.XMLHTTP"));
  }
}