function checkUncheckSome(controller,theElements) {
	//Programmed by Shawn Olson
	//Copyright (c) 2006
	//Permission to use this function provided that it always includes this credit text
	//  http://www.shawnolson.net
	//Find more JavaScripts at http://www.shawnolson.net/topics/Javascript/
	
	
	//theElements is an array of objects designated as a comma separated list of their IDs
	//If an element in theElements is not a checkbox, then it is assumed
	//that the function is recursive for that object and will check/uncheck
	//all checkboxes contained in that element
	
	
     var formElements = theElements.split(',');
	 var theController = document.getElementById(controller);
	 for(var z=0; z<formElements.length;z++){
	  theItem = document.getElementById(formElements[z]);
	  if(theItem){
	  if(theItem.type){
        if(theItem.type == 'checkbox' && theItem.id != theController.id){
	     theItem.checked = theController.checked;
	    }
	  } else {

	    var nextArray = '';
	     for(var x=0;x <theItem.childNodes.length;x++){
	      if(theItem.childNodes[x]){
	        if (theItem.childNodes[x].id){
	          nextArray += theItem.childNodes[x].id+',';
		    }
	      }
	     }
	     checkUncheckSome(controller,nextArray);
	   
	   }
	  
	  }
     }
    }
	
function togglelayer(objectID, changeID) {
	var theElementStyle = document.getElementById(objectID);
	var theChangedElement = document.getElementById(changeID);

	if(theElementStyle.style.display == "none") {
		theElementStyle.style.display = "block";
		theChangedElement.innerHTML = "<img src='/site/images/minus-icon.gif' align='absmiddle' border='0'>";
		//history.go();
	}
	else {
		theElementStyle.style.display = "none";
		theChangedElement.innerHTML = "<img src='/site/images/plus-icon.gif' align='absmiddle' border='0'>";
	}
}