dhtmlxSlider - can't get code to run

Didn’t know which section to post this in. Can’t get dhtmlxSlider to run, though the code is extremely similar to the sample code that came with it. Running it in IE7, and the sample code runs fine, but my code will not. I figure I’m just missing something or something is slightly off. My code is below:

Tristan's DHTMLX Slider Practice

Horizontal slider

The error I am getting is:
SCRIPT87: Invalid argument.
dhtmlxslider.js, line 15 character 428

Any advice would be greatly appreciated.


It is because of this line:

Please, replace the right name of file: dh[b]tm[/b]lxslider.css