var RakutoraTwitter = function(options) {
this.baseUrl = 'http://twitter.com/home/?status=';
this.setOptions(this, options, true);
this.mainUrl = '';
};
RakutoraTwitter.prototype.setOptions = function(obj, optionsObj, ignoreUndefined) {
if (!optionsObj)
return;
for (var optionName in optionsObj) {
if (ignoreUndefined && optionsObj[optionName] == undefined)
continue;
obj[optionName] = optionsObj[optionName];
}
};
RakutoraTwitter.prototype.makeUrl = function(title, url) {
this.mainUrl = this.baseUrl + encodeURIComponent(title + ' @RakutenTravel ' + url);
var element  = document.getElementById("RakutoraTwitter");
element.href = this.mainUrl;
};