function addAll(availableList,selectedList){
	availableList = document.getElementById(availableList);
    selectedList = document.getElementById(selectedList);

    var len = availableList.length -1;
    for(i=len; i>=0; i--){
        selectedList.appendChild(availableList.item(i));
    }
    selectNone(selectedList,availableList);
    //setSize(selectedList,availableList);
    
}
function addAttribute(availableList,selectedList){

	availableList = document.getElementById(availableList);
    selectedList = document.getElementById(selectedList);

    var addIndex = availableList.selectedIndex;
    if(addIndex < 0)
        return;
    selectedList.appendChild(availableList.options.item(addIndex));
    selectNone(selectedList,availableList);
    //setSize(selectedList,availableList);
}
function delAttribute(availableList,selectedList){

	availableList = document.getElementById(availableList);
    selectedList = document.getElementById(selectedList);

    var selIndex = selectedList.selectedIndex;
    if(selIndex < 0)
        return;
    availableList.appendChild(selectedList.options.item(selIndex))
    selectNone(selectedList,availableList);
    //setSize(availableList,selectedList);
}
function delAll(availableList,selectedList){

	availableList = document.getElementById(availableList);
    selectedList = document.getElementById(selectedList);

    var len = selectedList.length -1;
    for(i=len; i>=0; i--){
        availableList.appendChild(selectedList.item(i));
    }
    selectNone(selectedList,availableList);
    //setSize(selectedList,availableList);
    
}
function selectNone(list1,list2){
	
    if(list1.selectedIndex!=0)list1.selectedIndex = 0;
    if(list2.selectedIndex!=0) list2.selectedIndex = 0;
    addIndex = -1;
    selIndex = -1;
	setSAValues(list2,list1);
}
function setSAValues(availableList,selectedList){
	var data;
	if(selectedList.id=='sharedSelectedOptions')
	{
		data = '';
		var len = selectedList.length;
		for(i=0; i<len; i++){
			if(i>0)	data += ',';
			data += selectedList.item(i).value;
		}
		document.getElementById('currentSharedUsers').value = data;
	}
}

function setSize(list1,list2){
    list1.size = getSize(list1);
    list2.size = getSize(list2);
}
function getSize(list){
    /* Mozilla ignores whitespace, IE doesn't - count the elements in the list */
    var len = list.childNodes.length;
    var nsLen = 0;
    //nodeType returns 1 for elements
    for(i=0; i<len; i++){
        if(list.childNodes.item(i).nodeType==1)
            nsLen++;
    }
    if(nsLen<2)
        return 2;
    else
        return nsLen;
}
function getSelected(selectedList){
    var optionList = document.getElementById(selectedList).options;
    var data = '';
    var len = optionList.length;
    for(i=0; i<len; i++){
        if(i>0)
            data += ',';
        data += optionList.item(i).value;
    }
	return data;
}