// Booléen reconnaissant le navigateur
var isIE = (document.all);
var isNN6 = (!isIE) && (document.getElementById);

function getFormId(formName)
{
	var formID = document.getElementsByTagName("form")[formName].id;
	return formID;
}

function getAnchor(nameOfAnchor)
{
	var obj = document.anchors;

	for(var i = 0; i < obj.length; i++)
		if(obj[i].name == nameOfAnchor)
			return obj[i];
	return null;
}

function setFocus(idObj)
{
	document.getElementById(idObj).focus();
}

function hideShow(idObj, actionName)//actionName : show/hide ou valeur acceptable pour la propriété display
{
	var obj = document.getElementById(idObj);
	if(!obj)
		alert(idObj);
	if(actionName == 'show')
	{
		if(isNN6)
			obj.style.display = 'table-row';
		else if (isIE)
			obj.style.display = 'inline-block';
	}
	else if(actionName == 'hide')
		obj.style.display = 'none';
	else
		obj.style.display = actionName;
}

// Attention : elle ne fonctionne que pour un objet seul (boutons radios ou checkboxes)
function setObjValeur(idObj, valeur)
{
	if (document.getElementById(idObj))
		document.getElementById(idObj).value = valeur;
}

function advance(currentField, nextField, lalong)
{
	if (currentField.value.length == lalong)
	  	setFocus(nextField);
}

function MM_swapImgRestore() { //v3.0
	var i, x, a = document.MM_sr;
	for(i = 0; a && i < a.length && (x = a[i]) && x.oSrc; i++)
		x.src = x.oSrc;
}

function MM_preloadImages() { //v3.0
	var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
	var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
	if (a[i].indexOf("##")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v3.0
  var p,i,x;
  if(!d)
 	d=document;
  if((p=n.indexOf("?"))>0&&parent.frames.length) 
  {
    d=parent.frames[n.substring(p+1)].document; 
    n=n.substring(0,p);
  }
 if(!(x=d[n])&&d.all) 
 	x=d.all[n]; 
 for (i=0;!x&&i<d.forms.length;i++) 
 	x=d.forms[i][n];
 for(i=0;!x&&d.layers&&i<d.layers.length;i++) 
 	x=MM_findObj(n,d.layers[i].document); 
 return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_changeProp(objName,x,theProp,theValue) { //v6.0
	var obj = MM_findObj(objName);
	if (obj && (theProp.indexOf('style.')==-1 || obj.style)){
	if (theValue == true || theValue == false)
	eval('obj.'+theProp+'='+theValue);
	else eval('obj.'+theProp+"='"+theValue+"'");
	}
}
		
function getSelectedRadio(buttonGroup) {
   // returns the array number of the selected radio button or -1 if no button is selected
   if (buttonGroup[0]) { // if the button group is an array (one button is not an array)
      for (var i=0; i<buttonGroup.length; i++) {
         if (buttonGroup[i].checked) {
            return buttonGroup[i];
         }
      }
   } else {
      if (buttonGroup.checked) { return buttonGroup; } // if the one button is checked, return zero
   }
   // if we get to this point, no radio button is selected
   return -1;
} // Ends the "getSelectedRadio" function

function getSelectedRadioValue(buttonGroup) {
   // returns the value of the selected radio button or "" if no button is selected
   var obj = getSelectedRadio(buttonGroup);
   if (obj == -1)
   	return "";
	else
		return obj.value;
} // Ends the "getSelectedRadioValue" function