  handleBackButton: function(){    //summary: private method. Do not call this directly.    //The "current" page is always at the top of the history stack.    var current = this.historyStack.pop();    if(!current){ return; }    var last = this.historyStack[this.historyStack.length-1];    if(!last && this.historyStack.length == 0){      last = this.initialState;    }    if (last){      if(last.kwArgs["back"]){        last.kwArgs["back"]();      }else if(last.kwArgs["backButton"]){        last.kwArgs["backButton"]();      }else if(last.kwArgs["handle"]){        last.kwArgs.handle("back");      }    }    this.forwardStack.push(current);  },
6315	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/6315/65ae7e8768a77997b7894e274bc242069a1cb027/struts_dojo.js.uncompressed.js/clean/src/main/resources/org/apache/struts2/static/dojo/struts_dojo.js.uncompressed.js