/*********************************************** * Scroll To Top Control script- © Dynamic Drive DHTML code library (www.dynamicdrive.com) * Modified by www.MyBloggerTricks.com * This notice MUST stay intact for legal use * Visit Project Page at http://www.dynamicdrive.com for full source code ***********************************************/ 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:1000,fadeduration:[500,100]; } ,controlHTML:'

',//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=$('

'+mainobj.controlHTML+'

') .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()

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