Change dropdown list based on selection of a different dropdown list.

I have a dropdown list of countries. When one is selected, I need the list of states or provences from that selected country to populate the next dropdown or a text field to be displayed so one can enter a 'region'. I also need to pass the selected country and state or region on to a database.

I am not very familiar with javascript, but I understand there is a way to this using javascript.

Thanks for any and all help!

 

here is exactly what you're looking for:
http://www.justin-cook.com/wp/2006/...ing-select-menus-client-side-with-javascript/

 

Hey - Thanks for the direction!! I found a little easier code that is working great:

function countryDDChange(c,s){

var evt = document.getElementById(c);

var selectedIndex = evt.selectedIndex;
//var targetDD = document.getElementById("regionDD")
var targetDD = document.getElementById(s)
while(targetDD.length > 0){
targetDD.remove(0);
}

if(evt.options[selectedIndex].value == "Mexico"){

var newElement = document.createElement("option");
newElement.text = "Aguascalientes";
newElement.value = "Aguascalientes";
targetDD.options.add(newElement);
}else if(evt.options[selectedIndex].value == "Latin America"){
var newElement = document.createElement("option");
newElement.text = "Columbia";
newElement.value = "Columbia";
targetDD.options.add(newElement);

}
}

Then i call it from the dropdown box:
<select name="projectCountry" class="textBox" id="projectCountry" size="1" onChange="countryDDChange('projectCountry','projectState')">

And the dropdown box named 'projectState' is supplied with the states from Mexico or Latin America.

Thanks for your help. I hope this helps others.

 

the problem with that code is that you're hard-coding each option. It's much more maintainable, as well as more efficient to do it with the code I sent, that stores all potential options in arrays

 

I bet you are right!!

But like I said, i am a newbie and this works for now. I have a gut feeling the client will want to add all countries of the world and then I will be very grateful for your code.

Wish me luck.