var singleSelect = true;

var sortSelect = true;

var sortPick = true;

function initIt() {  
	var selectList = document.getElementById("amisListe");
	var pickList = document.getElementById("amisSel[]");
	var pickOptions = pickList.options;
    pickOptions[0] = null;
	
	// Remove initial entry from picklist (was only used to set default width)
	selectList.focus();
	
	// Set focus on the selectlist
}

function selectAll(listeDroite, listeGauche) {
	
	var selectList = document.getElementById(listeDroite);
	var selectOptions = selectList.options;
	var nb = selectOptions.length;
	while (nb>0){
		selectOptions[0].selected = true;
		addIt(listeDroite, listeGauche);
		nb = selectOptions.length;
 	}
 }

 
function deselectAll(listeDroite, listeGauche) {
	
	var pickList = document.getElementById(listeGauche);
	var pickOptions = pickList.options;
  	var nb = pickOptions.length;
	while (nb>0){
		pickOptions[0].selected = true;
		delIt(listeDroite, listeGauche);
		nb = pickOptions.length;
 	}
 }
 

// Adds a selected item into the picklist
function addIt(listeDroite, listeGauche) {
  var selectList = document.getElementById(listeDroite);
  var selectIndex = selectList.selectedIndex;
  var selectOptions = selectList.options;
  var pickList = document.getElementById(listeGauche);
  var pickOptions = pickList.options;
  var pickOLength = pickOptions.length;
  // An item must be selected
  if (selectIndex > -1) {    pickOptions[pickOLength] = new Option(selectList[selectIndex].text);
    pickOptions[pickOLength].value = selectList[selectIndex].value;
    // If single selection, remove the item from the select list
    if (singleSelect) {      selectOptions[selectIndex] = null;
    }    if (sortPick) {      var tempText;
      var tempValue;

      // Sort the pick list
      while (pickOLength > 0 && pickOptions[pickOLength].text < pickOptions[pickOLength-1].text) {        tempText = pickOptions[pickOLength-1].text;
        tempValue = pickOptions[pickOLength-1].value;
        pickOptions[pickOLength-1].text = pickOptions[pickOLength].text;
        pickOptions[pickOLength-1].value = pickOptions[pickOLength].value;
           pickOptions[pickOLength].text = tempText;
        pickOptions[pickOLength].value = tempValue;
        pickOLength = pickOLength - 1;
      }    }  }}
	 
      
// Deletes an item from the picklist
function delIt(listeDroite, listeGauche) {  
	var selectList = document.getElementById(listeDroite);
  var selectOptions = selectList.options;
  var selectOLength = selectOptions.length;
  var pickList = document.getElementById(listeGauche);
  var pickIndex = pickList.selectedIndex;
  var pickOptions = pickList.options;
  if (pickIndex > -1) {   // If single selection, replace the item in the select list
    if (singleSelect) {      selectOptions[selectOLength] = new Option(pickList[pickIndex].text);
      selectOptions[selectOLength].value = pickList[pickIndex].value;
    }    pickOptions[pickIndex] = null;
    if (singleSelect && sortSelect) {      var tempText;
      var tempValue;
      // Re-sort the select list
      while (selectOLength > 0 && selectOptions[selectOLength].text < selectOptions[selectOLength-1].text) {        tempText = selectOptions[selectOLength-1].text;
        tempValue = selectOptions[selectOLength-1].value;
        selectOptions[selectOLength-1].text = selectOptions[selectOLength].text;
        selectOptions[selectOLength-1].value = selectOptions[selectOLength].value;
        selectOptions[selectOLength].text = tempText;
        selectOptions[selectOLength].value = tempValue;
        selectOLength = selectOLength - 1;
      }    }  }}
	

function changeDiv(divName,checkboxName){
	// on cache la div actuellement affichée (en cachant toutes les div)
	if(document.getElementById(checkboxName).checked)
		document.getElementById(divName).style.display= 'block';	
	else
		document.getElementById(divName).style.display= 'none';
}

function selectAmis()
{
	for (var i = 0; i < document.getElementById('amisSel[]').options.length; i++) {
	   document.getElementById('amisSel[]').options[i].selected = true;
	}
}