dhtmlxlayout issue

For the above code i am getting error at line 62 ..char 11594
error 'this.skinParams[...].header_height is null or not an object.

Sorry! to say writing DHTML code is less and spending more time to debug dhtmlx code.
Non of the dhtmlxlayout example is working

Does your browser support javascript?

Is problem occurs with some predefined samples or only with in your custom code?
Online samples uses the same approach and works correctly
dhtmlx.com/docs/products/dhtmlxL … 7019737000

The error which you mention may occur in case, when incorrect skin name was specified inside layout contstructor.
Which build of dhtmlxSuite you are using? ( build number written at first line of any js file )