function ajax(action, data){
	//action example: /common/ckeditor/save_div.php
	//data example: id=blah&content=blah
	
	xmlHttp=null;
	return_value=null;
	if (window.XMLHttpRequest)
	  {// code for IE7, Firefox, Opera, etc.
	  xmlHttp=new XMLHttpRequest();
	  }
	else if (window.ActiveXObject)
	  {// code for IE6, IE5
	  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
	  }
	if (xmlHttp!=null)
	  {
	
	  xmlHttp.open("POST", action, true);
	  xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=UTF-8' ); 
	  xmlHttp.send(data);

	  }
	else
	  {
	  alert("Your browser does not support XMLHTTP.");
	  }

}