DHTML: Get Height of window and DOM element

offsetHeight property of DOM element will let you get its height.

Following javascript function will return the height of the window:

/* Get window height. To get DOM element height use offsetHeight. */
function getWindowHeight() {
   var windowHeight = 0;
   if (typeof(window.innerHeight) == 'number') {
     windowHeight = window.innerHeight;
   } else {
     if (document.documentElement && document.documentElement.clientHeight) {
        windowHeight = document.documentElement.clientHeight;
     } else {
        if (document.body && document.body.clientHeight) {
           windowHeight = document.body.clientHeight;
        }
     }
   }
   return windowHeight;
}

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