|
|
| Line 1: |
Line 1: |
| - | //** jQuery Scroll to Top Control script- (c) Dynamic Drive DHTML code library: http://www.dynamicdrive.com.
| |
| - | //** Available/ usage terms at http://www.dynamicdrive.com (March 30th, 09')
| |
| - | //** v1.1 (April 7th, 09'):
| |
| - | //** 1) Adds ability to scroll to an absolute position (from top of page) or specific element on the page instead.
| |
| - | //** 2) Fixes scroll animation not working in Opera.
| |
| | | | |
| - |
| |
| - | var scrolltotop={
| |
| - | //startline: Integer. Number of pixels from top of doc scrollbar is scrolled before showing control
| |
| - | //scrollto: Keyword (Integer, or "Scroll_to_Element_ID"). How far to scroll document up when control is clicked on (0=top).
| |
| - | setting: {startline:100, scrollto: 0, scrollduration:500, fadeduration:[500, 100]},
| |
| - | controlHTML: '<img src="https://static.igem.org/mediawiki/2014/9/9e/To-top.png" style="width:80px;height:auto;" />', //HTML for control, which is auto wrapped in DIV w/ ID="topcontrol"
| |
| - | controlattrs: {offsetx:5, offsety:5}, //offset of control relative to right/ bottom of window corner
| |
| - | anchorkeyword: '#top', //Enter href value of HTML anchors on the page that should also act as "Scroll Up" links
| |
| - |
| |
| - | state: {isvisible:false, shouldvisible:false},
| |
| - |
| |
| - | scrollup:function(){
| |
| - | if (!this.cssfixedsupport) //if control is positioned using JavaScript
| |
| - | this.$control.css({opacity:0}) //hide control immediately after clicking it
| |
| - | var dest=isNaN(this.setting.scrollto)? this.setting.scrollto : parseInt(this.setting.scrollto)
| |
| - | if (typeof dest=="string" && jQuery('#'+dest).length==1) //check element set by string exists
| |
| - | dest=jQuery('#'+dest).offset().top
| |
| - | else
| |
| - | dest=0
| |
| - | this.$body.animate({scrollTop: dest}, this.setting.scrollduration);
| |
| - | },
| |
| - |
| |
| - | keepfixed:function(){
| |
| - | var $window=jQuery(window)
| |
| - | var controlx=$window.scrollLeft() + $window.width() - this.$control.width() - this.controlattrs.offsetx
| |
| - | var controly=$window.scrollTop() + $window.height() - this.$control.height() - this.controlattrs.offsety
| |
| - | this.$control.css({left:controlx+'px', top:controly+'px'})
| |
| - | },
| |
| - |
| |
| - | togglecontrol:function(){
| |
| - | var scrolltop=jQuery(window).scrollTop()
| |
| - | if (!this.cssfixedsupport)
| |
| - | this.keepfixed()
| |
| - | this.state.shouldvisible=(scrolltop>=this.setting.startline)? true : false
| |
| - | if (this.state.shouldvisible && !this.state.isvisible){
| |
| - | this.$control.stop().animate({opacity:1}, this.setting.fadeduration[0])
| |
| - | this.state.isvisible=true
| |
| - | }
| |
| - | else if (this.state.shouldvisible==false && this.state.isvisible){
| |
| - | this.$control.stop().animate({opacity:0}, this.setting.fadeduration[1])
| |
| - | this.state.isvisible=false
| |
| - | }
| |
| - | },
| |
| - |
| |
| - | init:function(){
| |
| - | jQuery(document).ready(function($){
| |
| - | var mainobj=scrolltotop
| |
| - | var iebrws=document.all
| |
| - | mainobj.cssfixedsupport=!iebrws || iebrws && document.compatMode=="CSS1Compat" && window.XMLHttpRequest //not IE or IE7+ browsers in standards mode
| |
| - | mainobj.$body=(window.opera)? (document.compatMode=="CSS1Compat"? $('html') : $('body')) : $('html,body')
| |
| - | mainobj.$control=$('<div id="topcontrol">'+mainobj.controlHTML+'</div>')
| |
| - | .css({position:mainobj.cssfixedsupport? 'fixed' : 'absolute', bottom:mainobj.controlattrs.offsety, right:mainobj.controlattrs.offsetx, opacity:0, cursor:'pointer'})
| |
| - | .attr({title:'Scroll Back to Top'})
| |
| - | .click(function(){mainobj.scrollup(); return false})
| |
| - | .appendTo('body')
| |
| - | if (document.all && !window.XMLHttpRequest && mainobj.$control.text()!='') //loose check for IE6 and below, plus whether control contains any text
| |
| - | mainobj.$control.css({width:mainobj.$control.width()}) //IE6- seems to require an explicit width on a DIV containing text
| |
| - | mainobj.togglecontrol()
| |
| - | $('a[href="' + mainobj.anchorkeyword +'"]').click(function(){
| |
| - | mainobj.scrollup()
| |
| - | return false
| |
| - | })
| |
| - | $(window).bind('scroll resize', function(e){
| |
| - | mainobj.togglecontrol()
| |
| - | })
| |
| - | })
| |
| - | }
| |
| - | }
| |
| - |
| |
| - | scrolltotop.init()
| |
"
