function changeLang(oOption, oActLang)
{
		var q = String (window.location).split ('?')[1];// parse current url into an array with the keys/values
		if(!q){
			q="";
			window.location = '?LANG=' + oOption; // go go go :D
		}
		else{
			var newq = q.replace('&LANG='+oActLang+'', "").replace('LANG='+oActLang, "");
			if((newq=="")||(newq==null)||(!newq)){
				window.location = '?LANG=' + oOption; // go go go :D
			}else
			{
				window.location = '?' + newq + '&LANG=' + oOption;
			}
		}
}