Get user input and post to url
Need help with this; 

    <form action="?????" method="?????">
    a: <input type="text" name="a" value=""><br>
    b: <input type="text" name="b" value=""><br>
    c: <input type="text" name="c" value=""><br>
    <input type="submit" name="submit" value="????">
    </form>

once the user press the submit button, 
it shud open new browser to http://someothersite.com/a/b-c

Example
if value a=1,b=2,c=3
then open new browser pop-up to http://someothersite.com/1/2-3

Get user input and post to url
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Need help with this; 

    <form action="?????" method="?????">
    a: <input type="text" name="a" value=""><br>
    b: <input type="text" name="b" value=""><br>
    c: <input type="text" name="c" value=""><br>
    <input type="submit" name="submit" value="????">
    </form>

once the user press the submit button, 
it shud open new browser to http://someothersite.com/a/b-c

Example
if value a=1,b=2,c=3
then open new browser pop-up to http://someothersite.com/1/2-3
