function $(id) { return document.getElementById(id); } var global = function() { var obj = {}, trimregexp = /^\s+|\s+$/g; obj.trim = function(s) { return s.replace(trimregexp,''); }; obj.d2h = function(d) { return d.toString(16); }; obj.h2d = function(h) { return parseInt(h,16); }; obj.getvalbounds = function(val,min,max) { var val = Math.max(val,min); return Math.min(val,max); }; obj.getquerystring = function() { return window.location.search.replace(/^\?/,''); }; obj.addhtmlclass = function(name) { // fetch node var el = document.getElementsByTagName('html'), regexp = new RegExp('(^| )' + name + '( |$)'); if (!el.length) return; el = el[0]; // check if class name already exists if (regexp.test(el.className)) return; el.className = obj.trim(el.className + ' ' + name); }; return obj; }(); global.event = function() { var obj = {}, doc = document, win = window, eventcache = [], mozmousescroll = 'DOMMouseScroll'; obj.add = function(o,type,func) { if (win.addEventListener) { // W3 o.addEventListener(type,func,false); // mouse wheel event for Mozilla browsers // Opera & Safari attach with o.addEventListener('mousewheel',func,false) above if (iseventmousewheel(type)) o.addEventListener(mozmousescroll,func,false); return; } if (win.attachEvent) { // IE // methods here to fix 'this' upon event call, correct passing of the event object // and event tracking (eventcache) to allow memory cleanup on document unload var fname = type + func, ename = 'e' + fname; o[ename] = func; o[fname] = function() { return o[ename](win.event); }; o.attachEvent('on' + type,o[fname]); eventcache[eventcache.length] = { o: o,type: type,func: func }; } }; obj.remove = function(o,type,func) { if (win.removeEventListener) { // W3 o.removeEventListener(type,func,false); // mouse wheel event for Mozilla browsers if (iseventmousewheel(type)) o.removeEventListener(mozmousescroll,func,false); return; } if (win.detachEvent) { // IE var fname = type + func; o.detachEvent('on' + type,o[fname]); o[fname] = null; o['e' + fname] = null; } }; function iseventmousewheel(type) { return (type == 'mousewheel'); } obj.preventdefault = function(e) { if (e.preventDefault) { e.preventDefault(); return; } e.returnValue = false; // IE equivalent }; obj.gettarget = function(e) { // W3/IE target var target = e.target || e.srcElement; // defeat Safari bug return (target.nodeType == 3) ? target.parentNode : target; }; obj.getrelatedtarget = function(e) { // W3/IE related target return e.relatedTarget || ((e.type == 'mouseover') ? e.fromElement : ((e.type == 'mouseout') ? e.toElement : false)); }; obj.getmouseposition = function(e) { // W3 if (e.pageX || e.pageY) return { x: e.pageX, y: e.pageY }; // IE var docbody = doc.body, docel = doc.documentElement; if (e.clientX || e.clientY) return { x: e.clientX + docbody.scrollLeft + docel.scrollLeft, y: e.clientY + docbody.scrollTop + docel.scrollTop }; // can't determine mouse position return { x: 0,y: 0 }; }; obj.getmousewheeldir = function(e) { // e.detail for Mozilla & Opera, e.wheelData for IE & Safari // returns -1 for up movements, 1 for down movements return (((e.detail) ? (e.detail * -1) : e.wheelDelta) < 0) ? 1 : -1; }; obj.ismouseenterleave = function(el,e) { var rel = obj.getrelatedtarget(e); return !(!rel || ischildof(el,rel)); }; function ischildof(parent,child) { if (!child) return false; if (parent == child) return true; // call ischildof() recursively return ischildof(parent,child.parentNode); } obj.getkeycode = function(e) { return e.keyCode || e.which; }; if (win.detachEvent) { // setup IE event cleanup routine to run on document unload obj.add(win,'unload',function() { // cycle eventcache array and remove all events to avoid IE memory leaks for (var i = 0,j = eventcache.length;i < j;i++) { obj.remove(eventcache[i].o,eventcache[i].type,eventcache[i].func); } eventcache = null; }); } return obj; }();