function addEvent(obj,evType,fn){if(obj.addEventListener){obj.addEventListener(evType,fn,false);return true;}else if(obj.attachEvent){var r=obj.attachEvent("on"+evType,fn);return r;}else{return false;}}function removeEvent(obj,evType,fn,useCapture){if(obj.removeEventListener){obj.removeEventListener(evType,fn,useCapture);return true;}else if(obj.detachEvent){var r=obj.detachEvent("on"+evType,fn);return r;}else{alert("Handler could not be removed");}}function getViewportHeight(){if(window.innerHeight!=window.undefined)return window.innerHeight;if(document.compatMode=='CSS1Compat')return document.documentElement.clientHeight;if(document.body)return document.body.clientHeight;return window.undefined;}function getViewportWidth(){var offset=17;var width=null;if(window.innerWidth!=window.undefined)return window.innerWidth;if(document.compatMode=='CSS1Compat')return document.documentElement.clientWidth;if(document.body)return document.body.clientWidth;}function getScrollTop(){if(self.pageYOffset){return self.pageYOffset;}else if(document.documentElement&&document.documentElement.scrollTop){return document.documentElement.scrollTop;}else if(document.body){return document.body.scrollTop;}}function getScrollLeft(){if(self.pageXOffset){return self.pageXOffset;}else if(document.documentElement&&document.documentElement.scrollLeft){return document.documentElement.scrollLeft;}else if(document.body){return document.body.scrollLeft;}}