mxForm.prototype.addCombo=function(a,b,c){var d=document.createElement("select");null!=c&&d.setAttribute("size",c);b&&d.setAttribute("multiple","true");return this.addField(a,d)};mxForm.prototype.addOption=function(a,b,c,d){var e=document.createElement("option");mxUtils.writeln(e,b);e.setAttribute("value",c);d&&e.setAttribute("selected",d);a.appendChild(e)};