function doTask(params) {
  if (document.implementation && window.document.implementation.createDocument)
  {
    xmlDoc = document.implementation.createDocument("", "", null);
    xmlDoc.onload = doResponse;
  }
  else if (window.ActiveXObject)
  {
    xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
    xmlDoc.onreadystatechange = function () {
      if (xmlDoc.readyState == 4) doResponse()
    };
  }
  else
  {
    return false;
  }
  d = new Date; // Generic - use to create unique url requests
  var rand = d.getTime();
  var url=document.location.protocol+'//'+document.location.host+'/alt/doTask.php?rand='+rand+'&'+params;
  try{
    xmlDoc.load(url); // this is what we like to do
  } catch(e) { // if failed try using httprequest as a fallback - (e.g. Safari)
    try {
      req = new XMLHttpRequest();
    } catch(e) {
      req = false;
    }
    if(req) {
      req.onreadystatechange = processHttpRequest;
      req.open("GET", url, true);
      req.send("");
    }

  }

  return false;
}

function processHttpRequest() {
  if (req.readyState == 4) {
        if (req.status == 200) {
      xmlDoc=req.responseXML;
      doResponse();
        }
    }
}

function doResponse() {
  var tasks = xmlDoc.getElementsByTagName('task');
  var cmd=null;
  
  for(var i=0;i<tasks.length;i++) {
    cmd=tasks[i].getElementsByTagName('cmd')[0];

    if (cmd.childNodes[0]) {
      switch(cmd.childNodes[0].nodeValue) {
        case 'replace': // replace the innerHTML of an element
          var id=tasks[i].getElementsByTagName('id')[0].childNodes[0].nodeValue;
          if (tasks[i].getElementsByTagName('content')[0].textContent) var content=tasks[i].getElementsByTagName('content')[0].textContent; //avoid FF 4096 char limit
          else var content=tasks[i].getElementsByTagName('content')[0].childNodes[0].nodeValue;
          if (id.length>0 && document.getElementById(id)) document.getElementById(id).innerHTML=content;
          break;
        case 'execute': // run some js
          var script=tasks[i].getElementsByTagName('script')[0].childNodes[0].nodeValue;
          eval(script);
          break;

      }
    }
  }
  //document.getElementById('userCode').innerHTML=text;
}

function html_entity_decode(str) {
  var ta=document.createElement("textarea");
  ta.innerHTML=str.replace(/</g,"&lt;").replace(/>/g,"&gt;");
  return ta.value;
}

// allow css to hide items we don't need - this is because the element is only needed when JS is disabled
function hideElements() {
  if (document.styleSheets) {
    if (document.styleSheets[0].addRule) {    // IE
      document.styleSheets[0].addRule('.hideJS','display: none',0);
    } else {    // !IE
      document.styleSheets[0].insertRule('.hideJS {display: none}', 0);
    }
  }

}

/*
* Add the onload function to any other onload function
*/
function addLoadEvent(func) {
  var oldonload = window.onload;

  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

addLoadEvent(hideElements);

// show the form wait box
function showWait(id) {
  if (document.getElementById(id)) {
    var el=document.getElementById(id);

    el.style.position='absolute';
    el.style.left='50%';
    el.style.top='50%';
    el.style.display='block';
    el.style.marginLeft="-" + parseInt(el.offsetWidth  / 2)+'px';
    el.style.marginTop ="-" + parseInt(el.offsetHeight / 2)+'px';
  }
}

function chooseMemberHit(e) {
  if(!e) e=window.event;
  var el=e.target?e.target:e.srcElement;
  
  document.getElementById('phrase').value=el.innerHTML;
  document.getElementById('membersH').submit();
  
  return false;
}

function chooseBankHit(e) {
  if(!e) e=window.event;
  var el=e.target?e.target:e.srcElement;
  
  document.getElementById('infoPhrase').value=el.innerHTML.replace('&amp;','&');
  document.getElementById('infobankH').submit();
  
  return false;
}

function raiseMember() {
  document.getElementById('dynMemberResults').style.display='block';
}

function raiseBank() {
  document.getElementById('dynBankResults').style.display='block';
}

function setFadeHeight() {
  document.getElementById('fade').style.height=document.getElementById('page').offsetHeight+"px";
}


// -------------------------------------------------------------------
// unSelectMatchingOptions(select_object,regex)
//  This function Unselects all options that match the regular expression
//  passed in.
// -------------------------------------------------------------------
function unSelectMatchingOptions(obj,regex) {
	selectUnselectMatchingOptions(obj,regex,"unselect",false);
}

// -------------------------------------------------------------------
// moveSelectedOptions(select_object,select_object[,autosort(true/false)[,regex]])
//  This function moves options between select boxes. Works best with
//  multi-select boxes to create the common Windows control effect.
//  Passes all selected values from the first object to the second
//  object and re-sorts each box.
//  If a third argument of 'false' is passed, then the lists are not
//  sorted after the move.
//  If a fourth string argument is passed, this will function as a
//  Regular Expression to match against the TEXT or the options. If
//  the text of an option matches the pattern, it will NOT be moved.
//  It will be treated as an unmoveable option.
//  You can also put this into the <SELECT> object as follows:
//    onDblClick="moveSelectedOptions(this,this.form.target)
//  This way, when the user double-clicks on a value in one box, it
//  will be transferred to the other (in browsers that support the
//  onDblClick() event handler).
// -------------------------------------------------------------------
function moveSelectedOptions(from,to) {
	// Unselect matching options, if required
	if (arguments.length>3) {
		var regex = arguments[3];
		if (regex != "") {
			unSelectMatchingOptions(from,regex);
			}
		}
	// Move them over
	for (var i=0; i<from.options.length; i++) {
		var o = from.options[i];
		if (o.selected) {
			to.options[to.options.length] = new Option( o.text, o.value, false, false);
			}
		}
	// Delete them from original
	for (var i=(from.options.length-1); i>=0; i--) {
		var o = from.options[i];
		if (o.selected) {
			from.options[i] = null;
			}
		}
	if ((arguments.length<3) || (arguments[2]==true)) {
		sortSelect(from);
		sortSelect(to);
		}
	from.selectedIndex = -1;
	to.selectedIndex = -1;
}

// -------------------------------------------------------------------
// sortSelect(select_object)
//   Pass this function a SELECT object and the options will be sorted
//   by their text (display) values
// -------------------------------------------------------------------
function sortSelect(obj) {
	var o = new Array();
	for (var i=0; i<obj.options.length; i++) {
		o[o.length] = new Option( obj.options[i].text, obj.options[i].value, obj.options[i].defaultSelected, obj.options[i].selected) ;
		}
	o = o.sort(
		function(a,b) {
			if ((a.text+"") < (b.text+"")) { return -1; }
			if ((a.text+"") > (b.text+"")) { return 1; }
			return 0;
			}
		);

	for (var i=0; i<o.length; i++) {
		obj.options[i] = new Option(o[i].text, o[i].value, o[i].defaultSelected, o[i].selected);
		}
}

function SetOptionstoSelected(object_name,hidden_field) {
	var cat_options_value='';
	for (var i=(object_name.options.length-1); i>=0; i--) {
		if (cat_options_value == '') {
			cat_options_value = object_name.options[i].value;
		} else {
			cat_options_value = object_name.options[i].value+","+cat_options_value;
		}
	}
	hidden_field.value = cat_options_value;
}

function payOptions(issueNo, startMonth, startYear, pMethod) {
  switch(pMethod.toLowerCase()) {
    case 'invoice':
      document.getElementById('ccoptions').style.display='none';
      document.getElementById('invoiceoptions').style.display='block';
      break;
      
    default:
      document.getElementById('ccoptions').style.display='block';
      document.getElementById('invoiceoptions').style.display='none';
      document.getElementById('issueno').disabled=issueNo;
      document.getElementById('startmonth').disabled=issueNo;
      document.getElementById('startyear').disabled=issueNo;
      break;
  }
}

function checkPO(form, poFailed, retval) {
  if(document.getElementById('method6').checked) {
    if(!poFailed && !retval) return true;
  }
  return false;
}