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Team:Tsinghua-A
From 2013.igem.org
(Difference between revisions)
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<script type="text/javascript"> | <script type="text/javascript"> | ||
| + | |||
| + | //** Chrome Drop Down Menu- Author: Dynamic Drive (http://www.dynamicdrive.com) | ||
| + | |||
| + | //** Updated: July 14th 06' to v2.0 | ||
| + | //1) Ability to "left", "center", or "right" align the menu items easily, just by modifying the CSS property "text-align". | ||
| + | //2) Added an optional "swipe down" transitional effect for revealing the drop down menus. | ||
| + | //3) Support for multiple Chrome menus on the same page. | ||
| + | |||
| + | //** Updated: Nov 14th 06' to v2.01- added iframe shim technique | ||
| + | |||
| + | //** Updated: July 23rd, 08 to v2.4 | ||
| + | //1) Main menu items now remain "selected" (CSS class "selected" applied) when user moves mouse into corresponding drop down menu. | ||
| + | //2) Adds ability to specify arbitrary HTML that gets added to the end of each menu item that carries a drop down menu (ie: a down arrow image). | ||
| + | //3) All event handlers added to the menu are now unobstrusive, allowing you to define your own "onmouseover" or "onclick" events on the menu items. | ||
| + | //4) Fixed elusive JS error in FF that sometimes occurs when mouse quickly moves between main menu items and drop down menus | ||
| + | |||
| + | //** Updated: Oct 29th, 08 to v2.5 (only .js file modified from v2.4) | ||
| + | //1) Added ability to customize reveal animation speed (# of steps) | ||
| + | //2) Menu now works in IE8 beta2 (a valid doctype at the top of the page is required) | ||
| + | |||
| + | var cssdropdown={ | ||
| + | disappeardelay: 250, //set delay in miliseconds before menu disappears onmouseout | ||
| + | dropdownindicator: '<img src="down.gif" border="0" />', //specify full HTML to add to end of each menu item with a drop down menu | ||
| + | enablereveal: [true, 5], //enable swipe effect? [true/false, steps (Number of animation steps. Integer between 1-20. Smaller=faster)] | ||
| + | enableiframeshim: 1, //enable "iframe shim" in IE5.5 to IE7? (1=yes, 0=no) | ||
| + | |||
| + | //No need to edit beyond here//////////////////////// | ||
| + | |||
| + | dropmenuobj: null, asscmenuitem: null, domsupport: document.all || document.getElementById, standardbody: null, iframeshimadded: false, revealtimers: {}, | ||
| + | |||
| + | getposOffset:function(what, offsettype){ | ||
| + | var totaloffset=0; | ||
| + | var parentEl=what.offsetParent; | ||
| + | while (parentEl!=null){ | ||
| + | totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop; | ||
| + | parentEl=parentEl.offsetParent; | ||
| + | } | ||
| + | return totaloffset; | ||
| + | }, | ||
| + | |||
| + | css:function(el, targetclass, action){ | ||
| + | var needle=new RegExp("(^|\\s+)"+targetclass+"($|\\s+)", "ig") | ||
| + | if (action=="check") | ||
| + | return needle.test(el.className) | ||
| + | else if (action=="remove") | ||
| + | el.className=el.className.replace(needle, "") | ||
| + | else if (action=="add" && !needle.test(el.className)) | ||
| + | el.className+=" "+targetclass | ||
| + | }, | ||
| + | |||
| + | showmenu:function(dropmenu, e){ | ||
| + | if (this.enablereveal[0]){ | ||
| + | if (!dropmenu._trueheight || dropmenu._trueheight<10) | ||
| + | dropmenu._trueheight=dropmenu.offsetHeight | ||
| + | clearTimeout(this.revealtimers[dropmenu.id]) | ||
| + | dropmenu.style.height=dropmenu._curheight=0 | ||
| + | dropmenu.style.overflow="hidden" | ||
| + | dropmenu.style.visibility="visible" | ||
| + | this.revealtimers[dropmenu.id]=setInterval(function(){cssdropdown.revealmenu(dropmenu)}, 10) | ||
| + | } | ||
| + | else{ | ||
| + | dropmenu.style.visibility="visible" | ||
| + | } | ||
| + | this.css(this.asscmenuitem, "selected", "add") | ||
| + | }, | ||
| + | |||
| + | revealmenu:function(dropmenu, dir){ | ||
| + | var curH=dropmenu._curheight, maxH=dropmenu._trueheight, steps=this.enablereveal[1] | ||
| + | if (curH<maxH){ | ||
| + | var newH=Math.min(curH, maxH) | ||
| + | dropmenu.style.height=newH+"px" | ||
| + | dropmenu._curheight= newH + Math.round((maxH-newH)/steps) + 1 | ||
| + | } | ||
| + | else{ //if done revealing menu | ||
| + | dropmenu.style.height="auto" | ||
| + | dropmenu.style.overflow="hidden" | ||
| + | clearInterval(this.revealtimers[dropmenu.id]) | ||
| + | } | ||
| + | }, | ||
| + | |||
| + | clearbrowseredge:function(obj, whichedge){ | ||
| + | var edgeoffset=0 | ||
| + | if (whichedge=="rightedge"){ | ||
| + | var windowedge=document.all && !window.opera? this.standardbody.scrollLeft+this.standardbody.clientWidth-15 : window.pageXOffset+window.innerWidth-15 | ||
| + | var dropmenuW=this.dropmenuobj.offsetWidth | ||
| + | if (windowedge-this.dropmenuobj.x < dropmenuW) //move menu to the left? | ||
| + | edgeoffset=dropmenuW-obj.offsetWidth | ||
| + | } | ||
| + | else{ | ||
| + | var topedge=document.all && !window.opera? this.standardbody.scrollTop : window.pageYOffset | ||
| + | var windowedge=document.all && !window.opera? this.standardbody.scrollTop+this.standardbody.clientHeight-15 : window.pageYOffset+window.innerHeight-18 | ||
| + | var dropmenuH=this.dropmenuobj._trueheight | ||
| + | if (windowedge-this.dropmenuobj.y < dropmenuH){ //move up? | ||
| + | edgeoffset=dropmenuH+obj.offsetHeight | ||
| + | if ((this.dropmenuobj.y-topedge)<dropmenuH) //up no good either? | ||
| + | edgeoffset=this.dropmenuobj.y+obj.offsetHeight-topedge | ||
| + | } | ||
| + | } | ||
| + | return edgeoffset | ||
| + | }, | ||
| + | |||
| + | dropit:function(obj, e, dropmenuID){ | ||
| + | if (this.dropmenuobj!=null) //hide previous menu | ||
| + | this.hidemenu() //hide menu | ||
| + | this.clearhidemenu() | ||
| + | this.dropmenuobj=document.getElementById(dropmenuID) //reference drop down menu | ||
| + | this.asscmenuitem=obj //reference associated menu item | ||
| + | this.showmenu(this.dropmenuobj, e) | ||
| + | this.dropmenuobj.x=this.getposOffset(obj, "left") | ||
| + | this.dropmenuobj.y=this.getposOffset(obj, "top") | ||
| + | this.dropmenuobj.style.left=this.dropmenuobj.x-this.clearbrowseredge(obj, "rightedge")+"px" | ||
| + | this.dropmenuobj.style.top=this.dropmenuobj.y-this.clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+1+"px" | ||
| + | this.positionshim() //call iframe shim function | ||
| + | }, | ||
| + | |||
| + | positionshim:function(){ //display iframe shim function | ||
| + | if (this.iframeshimadded){ | ||
| + | if (this.dropmenuobj.style.visibility=="visible"){ | ||
| + | this.shimobject.style.width=this.dropmenuobj.offsetWidth+"px" | ||
| + | this.shimobject.style.height=this.dropmenuobj._trueheight+"px" | ||
| + | this.shimobject.style.left=parseInt(this.dropmenuobj.style.left)+"px" | ||
| + | this.shimobject.style.top=parseInt(this.dropmenuobj.style.top)+"px" | ||
| + | this.shimobject.style.display="block" | ||
| + | } | ||
| + | } | ||
| + | }, | ||
| + | |||
| + | hideshim:function(){ | ||
| + | if (this.iframeshimadded) | ||
| + | this.shimobject.style.display='none' | ||
| + | }, | ||
| + | |||
| + | isContained:function(m, e){ | ||
| + | var e=window.event || e | ||
| + | var c=e.relatedTarget || ((e.type=="mouseover")? e.fromElement : e.toElement) | ||
| + | while (c && c!=m)try {c=c.parentNode} catch(e){c=m} | ||
| + | if (c==m) | ||
| + | return true | ||
| + | else | ||
| + | return false | ||
| + | }, | ||
| + | |||
| + | dynamichide:function(m, e){ | ||
| + | if (!this.isContained(m, e)){ | ||
| + | this.delayhidemenu() | ||
| + | } | ||
| + | }, | ||
| + | |||
| + | delayhidemenu:function(){ | ||
| + | this.delayhide=setTimeout("cssdropdown.hidemenu()", this.disappeardelay) //hide menu | ||
| + | }, | ||
| + | |||
| + | hidemenu:function(){ | ||
| + | this.css(this.asscmenuitem, "selected", "remove") | ||
| + | this.dropmenuobj.style.visibility='hidden' | ||
| + | this.dropmenuobj.style.left=this.dropmenuobj.style.top="-1000px" | ||
| + | this.hideshim() | ||
| + | }, | ||
| + | |||
| + | clearhidemenu:function(){ | ||
| + | if (this.delayhide!="undefined") | ||
| + | clearTimeout(this.delayhide) | ||
| + | }, | ||
| + | |||
| + | addEvent:function(target, functionref, tasktype){ | ||
| + | if (target.addEventListener) | ||
| + | target.addEventListener(tasktype, functionref, false); | ||
| + | else if (target.attachEvent) | ||
| + | target.attachEvent('on'+tasktype, function(){return functionref.call(target, window.event)}); | ||
| + | }, | ||
| + | |||
| + | startchrome:function(){ | ||
| + | if (!this.domsupport) | ||
| + | return | ||
| + | this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body | ||
| + | for (var ids=0; ids<arguments.length; ids++){ | ||
| + | var menuitems=document.getElementById(arguments[ids]).getElementsByTagName("a") | ||
| + | for (var i=0; i<menuitems.length; i++){ | ||
| + | if (menuitems[i].getAttribute("rel")){ | ||
| + | var relvalue=menuitems[i].getAttribute("rel") | ||
| + | var asscdropdownmenu=document.getElementById(relvalue) | ||
| + | this.addEvent(asscdropdownmenu, function(){cssdropdown.clearhidemenu()}, "mouseover") | ||
| + | this.addEvent(asscdropdownmenu, function(e){cssdropdown.dynamichide(this, e)}, "mouseout") | ||
| + | this.addEvent(asscdropdownmenu, function(){cssdropdown.delayhidemenu()}, "click") | ||
| + | try{ | ||
| + | menuitems[i].innerHTML=menuitems[i].innerHTML+" "+this.dropdownindicator | ||
| + | }catch(e){} | ||
| + | this.addEvent(menuitems[i], function(e){ //show drop down menu when main menu items are mouse over-ed | ||
| + | if (!cssdropdown.isContained(this, e)){ | ||
| + | var evtobj=window.event || e | ||
| + | cssdropdown.dropit(this, evtobj, this.getAttribute("rel")) | ||
| + | } | ||
| + | }, "mouseover") | ||
| + | this.addEvent(menuitems[i], function(e){cssdropdown.dynamichide(this, e)}, "mouseout") //hide drop down menu when main menu items are mouse out | ||
| + | this.addEvent(menuitems[i], function(){cssdropdown.delayhidemenu()}, "click") //hide drop down menu when main menu items are clicked on | ||
| + | } | ||
| + | } //end inner for | ||
| + | } //end outer for | ||
| + | if (this.enableiframeshim && document.all && !window.XDomainRequest && !this.iframeshimadded){ //enable iframe shim in IE5.5 thru IE7? | ||
| + | document.write('<IFRAME id="iframeshim" src="about:blank" frameBorder="0" scrolling="no" style="left:0; top:0; position:absolute; display:none;z-index:90; background: transparent;"></IFRAME>') | ||
| + | this.shimobject=document.getElementById("iframeshim") //reference iframe object | ||
| + | this.shimobject.style.filter='progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)' | ||
| + | this.iframeshimadded=true | ||
| + | } | ||
| + | } //end startchrome | ||
| + | |||
| + | } | ||
cssdropdown.startchrome("chromemenu") | cssdropdown.startchrome("chromemenu") | ||
Revision as of 19:15, 26 September 2013
