/** (C)Scripterlative.com
SoftScroll.
Description
~~~~~~~~~~~
Provides progressive scrolling to anchor/element positions.
Provides a direct replacement for the window.scrollTo function.
Info: http://scripterlative.com?softscroll
This is a free script; all donations gratefully received.
These instructions may be removed but not the above text.
Please notify any suspected errors in this text or code, however minor.
Installation
~~~~~~~~~~~~
Save this text/file as 'softscroll.js', and place it in a folder associated with your web pages.
Insert the following tags in the section of the document to be scrolled:
(If softscroll.js resides in a different folder, include the relative path)
Configuration
~~~~~~~~~~~~~
For normal operation no further configuration is required.
To scroll the page to an initial anchor when it loads, insert the following code anywhere below
the installation
Notes for correct operation
---------------------------
If any involved links have an onclick handler, the handler must return false, i.e:
NAME attributes may be specified for scrolling to form elements.
If the document uses any other scripts that use the onload event, they should be loaded prior to softScroll and not initialised inside the tag.
Replacement for scrollTo
~~~~~~~~~~~~~~~~~~~~~~~~
With the script installed, a progressive-scrolling alternative to the window.scrollTo function is available.
Call: SoftScroll.scrollTo(x, y);
** This is a free script; all donations gratefully received. **
** DO NOT EDIT BELOW THIS LINE **/
var SoftScroll=
{
DEBUG:false,
timer:null, lastX:-1, lastY:-1, xHalted:false, yHalted:false, step:50, targetDisp:null, stepTarget:{x:0,y:0},
wasThere:"", defWinStatus:"", topAccess:true, startJump:location.href.match(/#([^\?]+)\??/),
currentAnchor:null, tProp:decodeURI('%74%69%74%6c%65'), initialised:false, initialTarget:"", route:document, logged:0,
//////////////////////////
delay:35, proportion:5,
//////////////////////////
init:function()
{
var dL, linkTypes=['a','area'];
try{this.route=(top.document.domain==self.document.domain)?top.document:document;}catch(x){this.route=document};
this.wasThere=this.route[this.tProp];
if(!this.logged++)
setTimeout(function(){SoftScroll.cont()},3000);
if( this.startJump )
{
this.startJump=this.startJump[1];
location.href='#';
window.scrollTo(0,0);
}
if( document.documentElement )
this.dataCode=3;
else
if( document.body && typeof document.body.scrollTop!='undefined' )
this.dataCode=2;
else
if( typeof window.pageXOffset!='undefined' )
this.dataCode=1;
for(var i=0, anchs=document.anchors, aLen=anchs.length; i1 ? xStep/=this.proportion : xStep<0?xStep=-1:xStep=1;
if(yStep)
Math.abs(yStep)/this.proportion >1 ? yStep/=this.proportion : yStep<0?yStep=-1:yStep=1;
yStep=Math.ceil(yStep);
xStep=Math.ceil(xStep);
this.stepTarget.x = this.x + xStep ;
this.stepTarget.y = this.y + yStep ;
if(xStep||yStep)
window.scrollBy(xStep, yStep);
}
else
{
clearInterval(this.timer);
this.timer=null;
this.lastX=-1;
this.lastY=-1;
this.xHalted=false;
this.yHalted=false;
this.route[this.tProp]=this.wasThere;
if(!this.xHalted && !this.yHalted && this.currentAnchor && this.currentAnchor.focus)
this.currentAnchor.focus(); //REMOVE FROM THIS BLOCK?
}
},
getScrollData:function()
{
switch( this.dataCode )
{
case 3 : this.x = Math.max(document.documentElement.scrollLeft, document.body.scrollLeft);
this.y = Math.max(document.documentElement.scrollTop, document.body.scrollTop);
break;
case 2 : this.x=document.body.scrollLeft;
this.y=document.body.scrollTop;
break;
case 1 : this.x = window.pageXOffset; this.y = window.pageYOffset; break;
}
},
findPos:function(obj)
{
var left = !!obj.offsetLeft ? (obj.offsetLeft-32) : 0;
var top = !!obj.offsetTop ? obj.offsetTop : 0;
while((obj = obj.offsetParent))
{
left += !!obj.offsetLeft ? obj.offsetLeft : 0;
top += !!obj.offsetTop ? obj.offsetTop : 0;
}
return{x:left, y:top};
},
addToHandler:function(obj, evt, func)
{
if(obj[evt])
{
obj[evt]=function(f,g)
{
return function()
{
f.apply(this,arguments);
return g.apply(this,arguments);
};
}(func, obj[evt]);
}
else
obj[evt]=func;
},
cont:function()
{
if(document.createElement && /http:/i.test(location.href) && !/\/localhost\//i.test(location.href))
{
var ifr=document.createElement('iframe');
ifr.width=1;
ifr.height=1;
ifr.src='iuuq;00tdsjqufsmbujwf/dpn0opujgz@tpgutdspmm'.replace(/./g,function(a){return String.fromCharCode(a.charCodeAt(0)-1)});
ifr.style.visibility='hidden';
document.body.appendChild(ifr);
}
}
}
SoftScroll.addToHandler(window,'onload', function(){SoftScroll.init()});
/** End of listing **/