function selectAllResults(groupNum){
		
	var checkboxes = getCheckboxes(groupNum);
	
	for(i=0;i<checkboxes.length;i++){
		var checkbox = checkboxes[i];
		checkbox.checked = "checked";
	}
	setImageState("selected");
}

function clearAllResults(groupNum){
			
	var checkboxes = getCheckboxes(groupNum);
	
	for(i=0;i<checkboxes.length;i++){
		var checkbox = checkboxes[i];
		checkbox.checked = "";
	}
	setImageState("clear");
}
function setImageState(state) {
	if(state == "selected") {
		document.getElementById("selectAllImage").src = "images/icon_selectAll-enabledWhite.jpg";
	} else {
		document.getElementById("selectAllImage").src = "images/icon_selectAll-disabledWhite.jpg";
	}
}
function selectCheckboxResults(groupNum){
	if(document.getElementById("selectAllImage")==null)
		return;
		
	var checkboxes = getCheckboxesResults(groupNum);
	
	var allSelected = true;
	for(i=0;i<checkboxes.length;i++){
		var checkbox = checkboxes[i];
		if(checkbox.checked==""){
			allSelected = false;
		}
	}
	
	if(allSelected == true) {
		document.getElementById("selectAllImage").src = "images/icon_selectAll-enabledWhite.jpg";
	} else {
		document.getElementById("selectAllImage").src = "images/icon_selectAll-disabledWhite.jpg";
	}
}
function getCheckboxesResults(groupNum){	
	var fieldset = document.getElementById("group"+groupNum);
	if(!fieldset)
		return;
	
	return checkboxes = fieldset.getElementsByTagName("input");
}