Am i missing here something or is ui.base.js really missing from the 1.5b release. Here are the steps, 1) I went to ui.jquery.com and downloaded 1.5b from the following URL http://code.google.com/p/jqueryjs/downloads/detail?name=jquery.ui-1.5b.zip 2) I went to documentation and it says that for "slider" i need ui.base.js because it is a dependancy but i dont find the file in the 1.5b release http://docs.jquery.com/UI/Slider Can anyone help?