function isset(chaine) {
	return (eval(chaine))?true:false;
}

var w;

// http://www.sitepoint.com/article/1041
// Méthode propre pour remplacer le "target=_blank" qui n'existe plus en XHTML
// <a href="document.html" rel="external">external link</a>
// window.onload = externalLinks;
function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external")
     anchor.target = "_blank";
 }
}

function removeMouseEvents() {
	var clean=new Array("a","area");
	for(var c=0;c<clean.length;c++) {
		var e=document.getElementsByTagName(clean[c]);
		for(var i=0;i<e.length;i++) {
			e[i].removeAttribute("onmousedown");
			e[i].removeAttribute("onmousemove");
			e[i].removeAttribute("onmouseout");
			e[i].removeAttribute("onmouseover");
			e[i].removeAttribute("onmouseup");
		}
	}
}

// returns the amount in the .99 format 
function numberFormatCentimes(amount) {
	amount -= 0;
	amount = (Math.round(amount*100))/100;
	return (amount == Math.floor(amount)) ? amount + '.00' : (  (amount*10 == Math.floor(amount*10)) ? amount + '0' : amount);
}

function ouvrirFenetre(url,nom,largeur,hauteur) {
	if (nom=="") {
		nom=""+Math.random();
		nom="A"+nom.substr(2,7);
	}
	w=window.open(url,nom,"dependent=yes,menubar=no,resizable=yes,toolbar=no,status=no,scrollbars=yes,width="+eval(largeur)+",height="+eval(hauteur));
	//msie=(navigator.appVersion.indexOf("MSIE")!=-1);
	//vers=parseInt(navigator.appVersion);
	//if ((!msie)||(vers>=5)) w.focus();
}

function ouvrirFenetreNoResize(url,nom,largeur,hauteur) {
	if (nom=="") {
		nom=""+Math.random();
		nom="A"+nom.substr(2,7);
	}
	w=window.open(url,nom,"dependent=yes,menubar=no,resizable=no,toolbar=no,status=no,scrollbars=no,width="+eval(largeur)+",height="+eval(hauteur));
	//msie=(navigator.appVersion.indexOf("MSIE")!=-1);
	//vers=parseInt(navigator.appVersion);
	//if ((!msie)||(vers>=5)) w.focus();
}

function fermerFenetre() {
	window.close();
}

function gotoUrl(url) {
  window.location.href=url;
}

function gotoUrlExt(url,ext) {
  window.location.href=url+'.'+ext;
}