UIwebview iphone query

i have 2 question based on UIWEBVIEW

1) if i set scaleToFitPage to YES, it will shrink the page down and it is not readable , how to make default zoom level lets say 20

2) how to add button to开发者_StackOverflow社区 UIwebview that will open my own viewController

// UPDATES////////////////

well zoom level is fixed now looking for button link to ViewController

zoom level code: < meta name="viewport" content="width=device-width, user-scalable=yes" />**

finally its resolved

zoom level code: < meta name="viewport" content="width=device-width, user-scalable=yes" />**

and for call i created hyperlink Thanks