Sets skin for form.

Parameters:

• skin - the skin you want to set.
  Available values:
  • 'dhx_skyblue' (default value)
  • 'dhx_web'
  • 'dhx_terrace'

myForm.setSkin('dhx_web');

1. Form gets the skin specified in the form object constructor (3rd parameter);
2. Form gets the skin set by global 'dhtmlx.skin';
3. Form tries to automatically detect the skin by analyzing included css files (if there are any, applies the last one);
4. Form gets the 'dhx_skyblue' skin.