/** Source: tk_frame_resizer.js Build: 2.2.13394 The following code resizes an embedded www.domain1.com/frameSizeNotifier.html: www.domain2.com/frame.html: Copyright (c) 2005-2010 TreKnowledge Technologies Inc., All rights reserved. */ (function() { if (typeof TK_APP_WRAPPER_ID === 'undefined') { var TK_APP_WRAPPER_ID = 'tkAppWrapper'; } if (typeof TK_APP_FRAME_ID === 'undefined') { var TK_APP_FRAME_ID = 'tkAppFrame'; } // Resize effect options var resizeCtx = { duration: 1000, // ms interval: 40, // ms timer: null, lastTime: 0, state: 0, target: 1 }; // Page scroll effect options var scrollCtx = { duration: 1000, // ms interval: 40, // ms timer: null, lastTime: 0, state: 0, target: 1 }; /** */ function nextFxTween(oFx) { var now = new Date().getTime(), movement = ((now - oFx.lastTime)/oFx.duration) * (oFx.state < oFx.target ? 1 : -1); if (Math.abs(movement) >= Math.abs(oFx.state - oFx.target)) { oFx.state = oFx.target; } else { oFx.state += movement; } if (oFx.state === oFx.target) { clearInterval(oFx.timer); oFx.timer = null; } oFx.lastTime = now; return -(Math.cos(Math.PI * oFx.state)-1)/2; }; /** Called by "tk_frame_size_notifier.html". */ window.tkResizeFrame = function(nHeight) { var wrapper = document.getElementById(TK_APP_WRAPPER_ID), frame = document.getElementById(TK_APP_FRAME_ID); if (wrapper && frame && nHeight > 0) { // Hide overflow wrapper.style.overflow = 'hidden'; // Clear top & bottom borders of both elements so they don't impact // the final height of both elements. wrapper.style.borderTopWidth = frame.style.borderTopWidth = wrapper.style.borderBottomWidth = frame.style.borderBottomWidth = '0px'; // Set the height of both elements to be the same if (!wrapper.style.height) { wrapper.style.height = frame.style.height = wrapper.offsetHeight+'px'; } var now = new Date().getTime(); // Setup and start the page scroll effect var doc = (!document.compatMode || document.compatMode === 'CSS1Compat') ? document.getElementsByTagName('html')[0] : document.body, fromY = window.pageYOffset || doc.scrollTop || 0, toY = 0, el = wrapper; do { toY += el.offsetTop || 0; el = el.offsetParent; } while (el); // Only scroll back up if the top of the wrapper is out of view if (fromY > toY) { if (scrollCtx.timer) { clearInterval(scrollCtx.timer); } scrollCtx.state = 0; scrollCtx.target = 1; scrollCtx.lastTime = now; scrollCtx.timer = setInterval(function() { var tween = nextFxTween(scrollCtx), fromY = window.pageYOffset || doc.scrollTop || 0, y = fromY + Math.round((toY - fromY) * tween); window.scrollTo(0, y); }, scrollCtx.interval); } // Setup and start the frame resize effect if (resizeCtx.timer) { clearInterval(resizeCtx.timer); } resizeCtx.state = 0; resizeCtx.target = 1; resizeCtx.lastTime = now; resizeCtx.timer = setInterval(function() { var tween = nextFxTween(resizeCtx), height = wrapper.offsetHeight + Math.round((nHeight - wrapper.offsetHeight) * tween); wrapper.style.height = frame.style.height = height+'px'; }, resizeCtx.interval); } }; })();