i have to display a combo box with some dynamic values that comes from the database when user checked a checkbox on the currently being viewed html page. I am getting dynamic values from the webserver as json or xml. Now i have take the values from the json or xml and i have to build the combobox and then display it next to the checkbox. so how to do it? please explain in simple steps? I am mainly confused in creating the combobox. I know that i can get the values by parsing the response but how to build the combox with those values and display it?