function process_chart( loadarea, action_to_take )
{ 
  var sel_question = document.manage_analyse.analyze_questions.selectedIndex  
  if (sel_question < 1) {
			alert("Please select a question to analyze.");
			document.manage_analyse.analyze_questions.focus();
			return false;
	}

	  
  var myobj=document.manage_analyse.analyze_questions
  
  if (action_to_take == 'show_filter')  {
		document.manage_analyse.filter.value='';
		document.manage_analyse.filter_self.value='';
  }  
  var address_string = "./process_chart.php?question_id=" + myobj.value + "&survey_id=" + document.manage_analyse.analyze_survey.value + "&action=" + action_to_take + "&filter=" + document.manage_analyse.filter.value + "&filter_self=" + document.manage_analyse.filter_self.value;   
 //alert(address_string); 
  ajaxpage(address_string, loadarea)
}	
 
function ajaxpage(url, c_id)
{
  var page_request = false
 
  if (window.XMLHttpRequest)     // if Mozilla, Safari etc
  {
    page_request = new XMLHttpRequest()
  }
  else if (window.ActiveXObject) // if IE
  {
    try
    {
      page_request = new ActiveXObject("Msxml2.XMLHTTP")
    }
    catch (e)
    {
      try
      {
        page_request = new ActiveXObject("Microsoft.XMLHTTP")
      }
      catch (e){}
    }
  }
  else
    return false
 
  page_request.onreadystatechange=function()
  {
    loadpage(page_request, c_id)
  }
  
  
  anticache=(url.indexOf("?")!=-1) ?
            "&"+new Date().getTime() :
            "?"+new Date().getTime()
 
  page_request.open('GET', url+anticache, true)
  page_request.send(null)
  
}