function changerlangue(lg){

	if(lg!='en'){
		//alert('changement de langue vers : "'+lg+'"');

		//enlever '#'
		var re = new RegExp("#.*", "g");
		var loc = ''+window.location;
		loc = loc.replace(re,'');

		//enlever un eventuel 'chglg='
		var re = new RegExp("chglg\=([a-zA-Z]{1,2})$", "g");
		loc = loc.replace(re,'');

		//url qui fini par un '&' :
		var re = new RegExp("\&$", "g");
		loc = loc.replace(re,'');


		var re = new RegExp("\\?", "g");


		if (loc.match(re)){
			window.location=loc+"&chglg="+lg;
		}
		else{
			window.location=loc+"?chglg="+lg;
		}

	}
}