var minisite = {};
/**
 * 判断浏览器
 */
minisite.browser = {
  ie: !!window.activexobject || "activexobject" in window,
  moz: /gecko/.test( window.navigator.useragent.tolowercase() ),
  opera: /opera/.test( window.navigator.useragent.tolowercase() ),
  safari: /safari/.test( window.navigator.useragent.tolowercase() )
};
/**
 * jsloader对象用来加载外部的js文件
 */
minisite.jsloader = {
  /**
   * 加载外部的js文件
   * @param surl 要加载的js的url地址
   * @param fcallback js加载完成之后的处理函数
   * @param type
   */
  load: function ( surl, type, fcallback ) {
    var _script = {};
    switch( type ){
      case 'js':
        _script = document.createelement( 'script' );
        _script.setattribute( 'type', 'text/javascript' );
        _script.setattribute( 'async','' );
        _script.setattribute( 'charset','utf-8' );
        _script.setattribute( 'src', surl );
        break;
      case 'css':
        _script = document.createelement( 'link' );
        _script.setattribute( 'rel', 'stylesheet' );
        _script.setattribute( 'type', 'text/css' );
        _script.setattribute( 'href', surl );
        break;
    }
    document.getelementsbytagname( 'head' )[ 0 ].appendchild( _script );
    if ( minisite.browser.ie ) {
      _script.onreadystatechange = function () {
        if ( this.readystate === 'loaded' || this.readystate === 'complete' ) {
          //fcallback();
          if ( fcallback !== undefined ) {
            fcallback();
          }
          
        }
      };
    } else if ( minisite.browser.moz ) {
      _script.onload = function () {
        //fcallback();
        if ( fcallback !== undefined ) {
          fcallback();
        }
      };
    } else {
      //fcallback();
      if ( fcallback !== undefined ) {
        fcallback();
      }
    }
  }
};