function showHideHistory(grpId, dirLevel)
{
	var selid = "showhidehistory" + grpId;
	var imgid = "showhidehistoryimg" + grpId;
	var minusImg = new Image();
	var plusImg = new Image();	
	minusImg.src = getHistoryImgPath(dirLevel) + "images/minus_icon.gif";
	plusImg.src = getHistoryImgPath(dirLevel) + "images/plus_icon.gif";	

	if(document.getElementById(selid).style.display=='none')
	{
		document.getElementById(selid).style.display='block';
		document.getElementById(imgid).src = minusImg.src;
		return true;
	}
	else
	{
		document.getElementById(selid).style.display='none';
		document.getElementById(imgid).src = plusImg.src;
		return false;
	}
}


function getHistoryImgPath(depth) {
	var str = "";
	var i;
	for (i = 0; i < depth; i++) {
		str += "../";
	}
	return str;
}


/************************************ Global Variables *************************************************/

  //AJAX Request Variables
  var grpHistoryReq;
  
  
  var groupId;
  
  
/*********************************** AJAX Calling Methods ***************************************************/
  function retrieveGroupHistory(url) 
  {
    if (window.XMLHttpRequest) { // Non-IE browsers
      grpHistoryReq = new XMLHttpRequest();
      try {
        grpHistoryReq.open("GET", url, true);
      } catch (e) {
        alert(e);
      }
      grpHistoryReq.onreadystatechange = processHistoryData;      
      grpHistoryReq.send(null);
    } else if (window.ActiveXObject) { // IE
      grpHistoryReq = new ActiveXObject("Microsoft.XMLHTTP");
      if (grpHistoryReq) {
		grpHistoryReq.open("GET", url, true);      
        grpHistoryReq.onreadystatechange = processHistoryData;        
        grpHistoryReq.send();
      }
    }
  }  
  
  
/*********************************** Retrieve History Methods *************************************************/

  function processHistoryData() {
    if (grpHistoryReq.readyState == 4) { // Complete
      if (grpHistoryReq.status == 200) { // OK response	
			populateHistory(grpHistoryReq);
      } else {
        alert("Problem: " + grpHistoryReq.statusText);
      }
    }
  }  
  
  
  function populateHistory(req)
  {
  	document.getElementById('grpspan' + groupId).innerHTML = req.responseText; 
  	grayOut(false);
  	document.getElementById("pleasewaitScreen").style.visibility="hidden";  	     	
  }
  
  
  function fillHistory(grpId)
  {
	var answer = confirm ("WARNING!!!  Filling with historical data will replace your current answers.  Press OK to proceed.")
	if (answer) {
		document.getElementById("pleasewaitScreen").style.top = (document.body.scrollTop + 150);	
		document.getElementById("pleasewaitScreen").style.visibility="visible";
		grayOut(true, {'zindex':'50','opacity':'30'});	
	  	groupId = grpId;
	  	var urlString = 'ajax.fillHistory?grpid=' + grpId;  	
		setTimeout('retrieveGroupHistory("' + urlString + '")', 10);	  		  	  
	} 
  }