Change CSS style from javascript?

Question

I would prefer not to use jquery just for simplicity. I have three websites which one page cycles through. I want the webpages to be scaled each by a different scalar value. I t

Answer 1

You need break statements to prevent the switch from falling through to the next statement.

switch(i)
{
case 0:
  document.getElementById('frame').className = 'first';
  break;
case 1:
  document.getElementById('frame').className = 'second';
  break;
case 2:
  document.getElementById('frame').className = 'third';
  break;
}      

Answer 2

Your switch statement is failing because it lacks a break statement at the end of each case. Without break, the proper case and any cases below it will execute. That is why "only the third one works"