document.getElementById problem in JS

[helloise]

i have the code in JS:

if(drop_list.value == "zed-catcher/11")
            {
               input_box.disabled=false;
               var catcher_id = document.getElementById('lpm_service_catcher_id');
               catcher_id.value = 11;
            }
            else
               input_box.disabled=true;

how come the line catcher_id.value = 11; is not setting the value to 11????

i get that catcher_id = null????

 

pleas help

thanks

[jcanker]

Have you verified that the dom element does actually exist? 

 

If it was created on the fly, did you actually attach it to the dom using insertbefore or a similar action? 

 

And have you checked the actual value of drop_list.value?  Alert it out and make sure you're actually entering the loop.