You got a browser that supports html 5?
If you see the buttons you call "scrollbar", I think yes.
And yes the Textboxes should only accept numbers, telephon also "+".
Here is a reference, scroll down until you find number and tlephone to see what they are doing. LINK
If you dont like the arrows use the "set custum css" action in Construct 2 to change this ;) Informations about that