This website gives 40 sites that can help web designers design their web sites to be iPad compatible.
Since all web browser are different and there is not a standard on web browsers, a website can look very different on different browsers. Sometimes a website might work fine on one browser but not work at all on another browser. All the browser have different padding and margins defaults, so the web designer must use scripts to be able to change those defaults on the different browsers. The script can also find out if the viewer is on a mobile phone or an iPad. This website gives the script on how to see if the viewer is displaying the website on the iPad and can direct the user to another site made for the iPad. http://davidwalsh.name/detect-ipad