text: //** 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:1000, fadeduration:[500, 100]},
  	controlHTML: '<img src="'+window.location.origin+'/img/back-to-top.png" style="width:76px" />', //HTML for control, which is auto wrapped in DIV w/ ID="topcontrol"
  	controlattrs: {offsetx:5, offsety:20}, //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=$('<div id="topcontrol">'+mainobj.controlHTML+'</div>')
                      .css({position:mainobj.cssfixedsupport? 'fixed' : 'absolute', bottom:mainobj.controlattrs.offsety, right:mainobj.controlattrs.offsetx, opacity:0, cursor:'pointer'})
                      .attr({title:'Cuộn lên'})
                      .click(function(){mainobj.scrollup(); return false})
                      .appendTo('body')
                  if (document.all && !window.XMLHttpRequest && mainobj.$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()
  
  //right scroll
  $(window).scroll(function () {
  	scrollWindows('#scroll-right', '#ads-two', '#footer-desktop');
  });
  
  function scrollWindows(Object, elementTo, lastObj){
  	var window_top = $(window).scrollTop();
  	var adsHeight = $(elementTo).offset().top + $(elementTo).height();
      var w = window.innerWidth;
  
      if (w > 768) {
      	if (window_top >= adsHeight/2) {
      		$(Object).removeClass("fixed-bot");
      		$(Object).addClass("fixed-top");
      	} else {
      		$(Object).removeClass("fixed-top");
      	}
      	if (window_top + $(Object).height() > $(lastObj).offset().top) {
      		$(Object).removeClass("fixed-top");
      		$(Object).addClass("fixed-bot");
      	}
      }
  }
  
  //scroll to element
  $(document).ready(function(){
      $("a.review").click(function() {
          $('html, body').animate({
              scrollTop: $(".review-form").offset().top
          }, 1000);
      });
  });