function chgLanguage(idioma){
var newlocat = "";
if (idioma == 0) {
	var litlan = "spanish";
	}
else
	{
	var litlan = "english";
	}

if (window.location.href.indexOf("?") == -1) {
	newlocat = window.location + "?language=" + litlan;
	}
else
	{
	if (window.location.href.indexOf("?language=") == -1) {
		newlocat = window.location + ";?language=" + litlan;
		}
	else
		{
		var pos = window.location.href.indexOf("?language=");
		var pc = window.location.href.indexOf(";",pos);
		var ini = window.location.href.substring(0,pos);
		var fin = "";
		if (pc != -1){
			fin = window.location.href.substring(pc);}
		if ((ini.indexOf(";") != -1) || (fin.indexOf(";") != -1)){
			newlocat = ini + fin + ";?language=" + litlan;
			}
		else
			{
			newlocat = ini + fin + "?language=" + litlan;
			}
		}
	}
window.location = newlocat;
}