function roundNumber(num, dec) {
	var result = Math.round(num*Math.pow(10,dec))/Math.pow(10,dec);
	return result;
}

function is_numeric(mixed_var) {
    return !isNaN(mixed_var);
}

function empty(mixed_var) {
    return (mixed_var === "" || mixed_var === null || mixed_var === false);
}

function trim(stringToTrim) {
	return stringToTrim.replace(/^\s+|\s+$/g,"");
}

function actionAjax(url, updateContent, idLoading) {
	jQuery.ajax({
	  url: url,
	  cache: false,
	  success: function(html) {
	  	jQuery("#" + updateContent).html(html);
	  }
	});
}

function validarUrl(url) {
	(url.value.substr(0, 11) != 'http://www.' || url.value.substr(0, 15) == 'http://www.www.' || url.value.substr(0, 18) == 'http://www.http://') ? url.value = 'http://www.' : false;
}

function cleanTextTinyMCE(id){
	if(escape(tinyMCE.get(id).getContent()) == ""){
		return false;
	}
	else{
		return true;
	}
}