非常不错的一个javascript 类

              } else {
                document.getElementById('wrapper').style.width="auto"
              }              
          }
      }
};
//jscc.addEvent(window,"load",function(e){jscc.widgets.wraphandler.init()});


jscc.widgets.styleSwitcher = {
    // jscc.widgets.styleSwitcher  reference StyleSwitcher functions( written by Paul Sowden http://www.idontsmoke.co.uk/ss/ . For the details, visit ALA: http://www.alistapart.com/stories/alternate/)
    init:function(e) {
        var cookie = jscc.cookie.read("style");
        var title = cookie ? cookie : this.getPreferred();
        title = (title==null?"left":title);
        this.setActive(title);
        var operactioner = document.getElementById("themes").getElementsByTagName("A");
    operactioner[0].onclick=function() {
        jscc.widgets.styleSwitcher.setActive("left");
        return false;
    };
    operactioner[1].onclick=function() {
        jscc.widgets.styleSwitcher.setActive("right");
        return false;
    };
    this.switcher(title);
    },
    setActive:function(title){
        var i, a, main;
          for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
        if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
                a.disabled = true;
                if(a.getAttribute("title") == title) a.disabled = false;
            }
        }