In the example in this link, values are directly inserted to drop down list.I want to insert values into drop down list from a table.Does it make any difference?

Where should i place this code?in a java script??
$("#series").ch ained("#mark");
I have placed it in a java script.But have not got the output.
<script type="text/javascript">
$("#series").ch ained("#mark");...

chapter "4. jQuery Chained Select" is giving an error page in the above link...can you please give an example of the code.

Thank you for replying...But my problem is not solved.I want to get the drop down list populated from the tables country and state in data base.I don't know java script.How can i do this?Can you Please provide code in java script.

I am doing a program in java .I have designed a java server page which has 3 drop down list's...countr y,state.I want to display only corresponding the values in drop down list state when a country is selected...(for example:-if India is selected,drop down list state must have only the name of states in India).I have created 2 tables country and state.Table country has country id and country name.Table state has state id,state name and a foreign key...