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Thread: Sliding/Floating menu

  1. #1
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    Default Sliding/Floating menu

    Hello there,

    I have searched hi and low for help with this issue.

    I would like a part of my sidebar to scroll, like the scrolling media player on http://www.trackitdown.net

    I followed this tutorial on Net Tuts

    It was insightful, however it makes a menu which scrolls constantly.

    Is there a way to make a part of my blog/section/div etc, only begin to scroll down when the screen reaches a certain point? Like the one on TrackItDown?

    Any help massively appreciated! =)

    Thanks folks!

  2. #2
    Join Date
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    Default

    Code:
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    
    <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
    
    <head>
      <title></title>
    <style type="text/css">
    /*<![CDATA[*/
    .tstp {
      position:absolute;left:100px;top:100px;width:100px;height:900px;border:solid black 1px;
    }
    
    #tst {
      position:absolute;left:0px;top:10px;width:100px;height:100px;background-Color:red;
    }
    
    
    /*]]>*/
    </style>
    
    <script type="text/javascript">
    /*<![CDATA[*/
    // Basic Element Animator (14-May-2009)
    // by Vic Phillips http://www.vicsjavascripts.org.uk
    
    // To progressively change the Left, Top, Width, Height or Opacity of an element over a specified period of time.
    // With the ability to scale the effect time on specified minimum/maximum values
    // and with three types of progression 'sin' and 'cos' and liner and an optional 'Bounce'.
    
    // **** Application Notes
    
    // **** The HTML Code
    //
    // when moving an element the inline or class rule style position of the element should be assigned as
    // 'position:relative;' or 'position:absolute;'.
    //
    // The element would normally be assigned a unique ID name.
    //
    
    // **** Executing the Effect(Script)
    //
    // The effect is executed by an event call to function 'zxcBAnimator('width#',document.getElementById('tst'),10,800,5000,[10,800],'sin');'
    // where:
    //  parameter 0 = the mode(see Note 2).                                                                     (string)
    //  parameter 1 = the unique ID name or element object.                                                     (string or element object)
    //  parameter 2 = the start position of the effect.                                                         (digits, for opacity minimum 0, maximum 100)
    //  parameter 3 = the finish position of the effect.                                                        (digits, for opacity minimum 0, maximum 100)
    //  parameter 4 = (optional) period of time between the start and finish of the effect in milliseconds.     (digits or defaults to 2000 milliSeconds)
    //  parameter 5 = (optional) to scale the effect time on a specified minimum/maximum.                        (array, see Note 5)
    //                 field 0 the minimum. (digits)
    //                 field 1 the maximum. (digits)
    //  parameter 6 = (optional) the type of progression, 'sin', 'cos' or 'liner'.                              (string, default = 'liner')
    //                 'sin' progression starts fast and ends slow.
    //                 'cos' progression starts slow and ends fast.
    //
    //  Note 1:  The default units(excepting opacity) are 'px'.
    //  Note 2:  Examples modes: 'left', 'top', 'width', 'height', 'opacity.
    //           For hyphenated modes, the first character after the hyphen must be upper case, all others lower case.
    //  Note 3:  To 'toggle' the effect include '#' in parameter 0.
    //           The first call will set the toggle parameters.
    //           Subsequent calls with '#' in parameter 0 and the same start and finish parameters will 'toggle' the effect.
    //  Note 4:  The function may be re-executed with a different set of parameters (start/finish time or period)
    //           whenever required, say from an onclick/mouseover/out event.
    //           The period parameter will be retained unless re-specified.
    //  Note 5: parameter 5 is of particular use when re-calling the effect
    //          in mid travel to retain an constant rate of progression.
    //  Note 6: parameters 2 and 3 must be different values to execute the script.
    //
    
    
    // **** Functional Code - NO NEED to Change
    
    
    function zxcBAnimator(mde,obj,srt,fin,ms,scale,curve){
     if (typeof(obj)=='string'){ obj=document.getElementById(obj); }
     if (!obj) return;
     var oop=obj[mde.replace(/\W/g,'')+'oop'];
     if (oop){
      if (oop.srtfin[0]==srt&&oop.srtfin[1]==fin&&mde.match('#')) oop.update([oop.data[0],(oop.srtfin[0]==oop.data[2])?fin:srt],ms,scale,curve);
      else oop.update([srt,fin],ms,scale,curve);
     }
     else oop=obj[mde.replace(/\W/g,'')+'oop']=new zxcBAnimatorOOP(mde,obj,srt,fin,ms,scale,curve);
     return oop;
    }
    
    function zxcBAnimatorOOP(mde,obj,srt,fin,ms,scale,curve){
     this.srtfin=[srt,fin];
     this.to=null;
     this.obj=obj;
     this.mde=mde.replace(/\W/g,'');
     this.update([srt,fin],ms,scale,curve);
    }
    
    zxcBAnimatorOOP.prototype.update=function(srtfin,ms,scale,curve){
     clearTimeout(this.to);
     this.time=ms||this.time||2000;
     this.data=[srtfin[0],srtfin[0],srtfin[1]];
     this.mS=this.time*(!scale?1:Math.abs((srtfin[1]-srtfin[0])/(scale[1]-scale[0])));
     this.ms=this.mS;
     this.curve=(typeof(curve)=='string')?curve.charAt(0).toLowerCase():(this.curve)?this.curve:'x';
     this.inc=Math.PI/(2*this.mS);
     this.srttime=new Date().getTime();
     this.cng();
    }
    
    zxcBAnimatorOOP.prototype.cng=function(){
     this.ms=new Date().getTime()-this.srttime;
     this.data[0]=(this.curve=='s')?Math.floor((this.data[2]-this.data[1])*Math.sin(this.inc*this.ms)+this.data[1]):(this.curve=='c')?(this.data[2])-Math.floor((this.data[2]-this.data[1])*Math.cos(this.inc*this.ms)):(this.data[2]-this.data[1])/this.mS*this.ms+this.data[1];
     this.apply();
     if (this.ms<this.mS) this.to=setTimeout(function(oop){return function(){oop.cng();}}(this),10);
     else {
      this.data[0]=this.data[2];
      this.apply();
      if (this.Bounce&&this.Bounce[2]>0) this.bounce();
     }
    }
    
    zxcBAnimatorOOP.prototype.apply=function(){
     if (isFinite(this.data[0])){
      if (this.mde!='left'&&this.mde!='top'&&this.data[0]<0) this.data[0]=0;
      if (this.mde!='opacity') this.obj.style[this.mde]=this.data[0]+'px';
      else zxcOpacity(this.obj,this.data[0]);
     }
    }
    
    zxcBAnimatorOOP.prototype.bounce=function(){
     if (this.Bounce[2]%2==0)
     this.Bounce[1]+=(this.Bounce[0]-this.Bounce[1])/(this.Bounce[2])
     this.update([this.data[0],this.Bounce[this.Bounce[2]%2==0?1:0]],this.Bounce[3]/this.Bounce[2]);
     this.Bounce[2]--;
    }
    
    function zxcOpacity(obj,opc){
     if (opc<0||opc>100) return;
     obj.style.filter='alpha(opacity='+opc+')';
     obj.style.opacity=obj.style.MozOpacity=obj.style.KhtmlOpacity=opc/100-.001;
    }
    
    /*]]>*/
    </script>
    
    <script  type="text/javascript">
    /*<![CDATA[*/
    function Float(id,ms){
     this.obj=document.getElementById(id);
     this.parent=this.obj.parentNode
     this.mm=[this.obj.offsetTop,this.parent.offsetHeight-this.obj.offsetHeight];
     this.check();
     this.top=zxcWWHS()[3];
     this.ms=ms||1000;
    }
    
    Float.prototype.check=function(){
     var oop=this,top=zxcWWHS()[3];
     if (top==this.top){
      var pos=Math.min(Math.max(top-zxcPos(this.parent)[1]+this.mm[0],this.mm[0]),this.mm[1]);
      zxcBAnimator('top',this.obj,this.obj.offsetTop,pos,this.ms,this.mm);
      setTimeout(function(){ oop.check(); },this.ms);
     }
     else {
     this.top=top;
     setTimeout(function(){ oop.check(); },200);
     }
    }
    
    function zxcPos(obj){
     var rtn=[obj.offsetLeft,obj.offsetTop];
     while(obj.offsetParent!=null){
      var objp=obj.offsetParent;
      rtn[0]+=objp.offsetLeft;
      rtn[1]+=objp.offsetTop;
      obj=objp;
     }
     return rtn;
    }
    
    
    function zxcWWHS(){
     if (window.innerHeight) return [window.innerWidth-10,window.innerHeight-10,window.pageXOffset,window.pageYOffset];
     else if (document.documentElement.clientHeight) return [document.documentElement.clientWidth-10,document.documentElement.clientHeight-10,document.documentElement.scrollLeft,document.documentElement.scrollTop];
     return [document.body.clientWidth,document.body.clientHeight,document.body.scrollLeft,document.body.scrollTop];
    }
    
    /*]]>*/
    </script>
    
    </head>
    
    <body onload="F1=new Float('tst');">
    <div class="tstp" >
    <div id="tst" >tt</div>
    </div>
    <div style="height:5000px;" ></div>
    </body>
    
    </html>

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