Schedular on web page

What I need to do to put schedular on web page? I have javascript error
“Error: this._obj is null
File name: localhost/system_zakladu/common/ … heduler.js
line: 1663”
Line 1663 is :“var els=this._obj.getElementsByTagName(“DIV”);”

It seems that you have not copied full html snippet on the page, or using invailid html container id in the scheduler.init command.

Ok thank you for help