<*script type='text/javascript' language='Javascript'> | |
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 (1=top). | |
setting: {startline:100, scrollto: 0, scrollduration:1000, fadeduration:[500, 100]}, | |
controlHTML: '<img src="http://pixserv.clipmass.com/upload/picture/full/f1d3c9838b692815b86b278d99abb1e3.png"/>', //HTML for control, which is auto wrapped in DIV w/ ID="topcontrol" | |
controlattrs: {offsetx:5, offsety:5}, //offset of control relative to right/ center 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() | |
</script*>
ส่วน * อย่าลืมเอาออกกันด้วยนะครับ จะมีช่วงต้นกับช่วงท้าย รวมเป็น 2 อันที่ต้องเอาออก คือส่วนurl ของภาพ back to up นะครับ เราสามารถเป็นได้เองตามใจชอบเลยครับ http://pixserv.clipmass.com/upload/picture/full/f1d3c9838b692815b86b278d99abb1e3.png |