Auto scroll to nearest container

patchgill · 10-26-2012, 09:06 AM

I'm having a bit of a problem with a site I'm building.
I want an effect that if your in between 2 div's it will auto scroll after the mouse has been stationary for approx. 2 seconds.
An example of this effect can be found on http://www.tigihairreborn.com/en-gb/ which I think uses ScrollTo.js to create the effect.

My site uses the same layout with each div container been 1000px. I can use scrollTo.js to click a link to take me too a container, but I want it to detect if its not at the top of a div and scroll to the closest one.

Any information to point me in the correct direction would be greatfully appreciated.

Thanks in advance
J

vwphillips · 10-26-2012, 12:27 PM

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[*/

.anchor {
  width:100px;height:1000px;background-Color:red;
}

/*]]>*/
</style>

<script type="text/javascript">
/*<![CDATA[*/
// Scroll to Anchor. (26=October-2012)
// by Vic Phillips - http://www.vicsjavascripts.org.uk/

function zxcScrollTo(o){
 var ms=o.ScrollDuration,hold=o.ScrollHold,ms=typeof(ms)=='number'?ms:1000,reg=new RegExp('\\W'+o.AnchorClass+'\\W'),els=document.getElementsByTagName('*'),ary=[],z0=0;
 for (;z0<els.length;z0++){
  if(reg.test(' '+els[z0].className+' ')){
   ary.push(els[z0]);
  }
 }
 this.ary=ary
 this.ms=ms;
 this.hold=(typeof(hold)=='number'?hold:ms*4)+ms;
 this.nu=-1;
 this.set()
 this.addevt(document,'mousemove','set');
}

zxcScrollTo.prototype={

 set:function(){
  var o=this;
  clearTimeout(o.to);
  o.to=setTimeout(function(){ o.scroll(); },o.hold)
 },

 scroll:function(){
  var o=this,top=o.wwhs()[3],max=20000,nu,to,ms,z0=0;
  for (;z0<o.ary.length;z0++){
   if (Math.abs(top-o.pos(o.ary[z0]))<max){
    nu=z0;
   }
   max=Math.abs(top-o.pos(o.ary[z0]));
  }
  to=o.pos(o.ary[nu])
  ms=o.ms*Math.abs((to-top)/o.wwhs()[1])
  clearTimeout(o.dly);
  o.animate(top,o.pos(o.ary[nu]),new Date(),ms,Math.PI/(2*ms));
 },

 wwhs:function(){
  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];
 },

 animate:function(f,t,srt,mS,i){
  var o=this,ms=new Date().getTime()-srt,now=Math.floor((t-f)*Math.sin(i*ms)+f),now1=(t-f)/mS*ms+f;
  if (isFinite(now)){
   window.scrollTo(0,now);
  }
  if (ms<mS){
   o.dly=setTimeout(function(){ o.animate(f,t,srt,mS,i); },10);
  }
  else {
   window.scrollTo(0,t);
  }
 },

 pos:function(obj){
  var rtn=0;
  while(obj){
   rtn+=obj.offsetTop;
   obj=obj.offsetParent;
  }
  return rtn;
 },

 addevt:function(o,t,f,p){
  var oop=this;
  if (o.addEventListener) o.addEventListener(t,function(e){ return oop[f](e,p);}, false);
  else if (o.attachEvent) o.attachEvent('on'+t,function(e){ return oop[f](e,p); });
 }


}


/*]]>*/
</script>
<script type="text/javascript">
/*<![CDATA[*/

function Init(){
 new zxcScrollTo({
  AnchorClass:'anchor',
  ScrollDuration:1000,
  ScrollHold:4000
 });
}

if (window.addEventListener){
 window.addEventListener('load',Init, false);
}
else if (window.attachEvent){
 window.attachEvent('onload',Init);
}

/*]]>*/
</script>

</head>

<body>

<div class="anchor" ></div>
<div class="anchor" style="background-Color:blue;" ></div>
<div class="anchor" style="background-Color:green;" ></div>

</body>

</html>