function changer_langue(langue){
	var strURL = new String(document.location);
	
	if (langue == "an"){
		if(strURL.indexOf("_fr.html") > 0){
			strURL = strURL.replace("_fr.html","_an.html");
		}
		else{
			if (getQueryVariable("langue") != "" && getQueryVariable("langue") != undefined) {
				strURL = strURL.replace("langue="+getQueryVariable("langue"),"langue=an")
			}
			else{
				if (strURL.indexOf("?") > 0) {
					strURL = strURL.replace("#affichage","");
					strURL = strURL + "&langue=an";
				}
				else {
					strURL = strURL.replace("#affichage","");
					strURL = strURL + "?langue=an";
				}
			}
		}
	}
	if (langue == "fr"){
		if(strURL.indexOf("_an.html") > 0){
			strURL = strURL.replace("_an.html","_fr.html");
		}
		else{
			if (getQueryVariable("langue") != "" && getQueryVariable("langue") != undefined) {
				strURL = strURL.replace("langue="+getQueryVariable("langue"),"langue=fr")
			}
			else{
				if (strURL.indexOf("?") > 0) {
				
					strURL = strURL.replace("#affichage","");
					strURL = strURL + "&langue=fr";
				}
				else {
					strURL = strURL.replace("#affichage","");
					strURL = strURL + "?langue=fr";
				}
			}
		}
	}
	
	location.href=strURL;
}