Invalid content type error

Hi,
           i  am using Kannel 1.4.1 for my sms application.The configuration settings have been made.When i use that url directly into the browser it runs fine, but i have to use it into my sms appplication which has been made in ASP.

To send the sms i have made a html form, and using javascript i am submitting all the values to the kannel.after submitting it gives 'invalid content type' error.
but when i print this URl on to the sreen and copy an paste it into the browser ,then it runs fine.

can anyone of you please tel me that where i am making the mistake or anyother solution.I am using 'get' method in my form.
Thanks in advanvce.


Thanks & Regards,
Sudhir Sharma