function trim(cadena) {
	if(!cadena || !cadena.length)
		return cadena;

	for(i=0; i< cadena.length; ) {
		if(cadena.charAt(i)==" ")
			cadena=cadena.substring(i+1, cadena.length);
		else
			break;
	}

	for(i=cadena.length-1; i>=0; i=cadena.length-1) {
		if(cadena.charAt(i)==" ")
			cadena=cadena.substring(0,i);
		else
			break;
	}
        
        return cadena;
}

function __parametersObjectToURL(parameters) {
        if(!parameters)
                return '';

        var str_parameters = '';
        for(var a in parameters)
                str_parameters += '&' + a + '=' + parameters[a];

        return str_parameters;
}

function modTT780(mod, parameters, complete) {
        async = true;
        if(!complete)
                async = false;

        var str_parameters = __parametersObjectToURL(parameters);

        return $.ajax({
                type: "GET",
                url: "index.php",
                data: "js=true&mod=" + mod + str_parameters,
                async: async,
                complete: complete
        });

}