I am developing an application in struts framework , where i am trying to display some content to the div tag in jsp when a option is selected in drop down box in a <html:form>

i can do this in jsp using onchange=this.form.submit() but i dont want to use this method as it effects the performance of the page display,

So i want to know is there is any other process to develop it

Can any one tell me how to use ajax for this application

Please provide me the information,

Thanks in advance