/*
 *
 * Class: FloatObject
 *
 * Usage : create a div with your content
 * Add a script : $(document).ready( function() { $("#myDiv").makeFloat({x:"current",y:"current"}); } );
 *
 * // you may want to use x: 480-dw/2 and y: 20
 * // for a centered div 960 pixels with a 10 pixels top margin
 *
 */ 
(function($){function FloatObject(jqObj,params)
{this.jqObj=jqObj;switch(params.speed)
{case'fast':this.steps=5;break;case'normal':this.steps=10;break;case'slow':this.steps=20;break;default:this.steps=10;};var offset=this.jqObj.offset();this.currentX=offset.left;this.currentY=offset.top;this.width=this.jqObj.width();this.height=this.jqObj.height();this.alwaysVisible=params.alwaysVisible;this.alwaysTop=params.alwaysTop;this.origX=typeof(params.x)=="string"?this.currentX:params.x;this.origY=typeof(params.y)=="string"?this.currentY:params.y;this.jqObj.css({'position':'absolute','top':this.currentY,'left':this.currentX});}
FloatObject.prototype.updateLocation=function()
{this.updatedX=$(window).scrollLeft()+this.origX;if(this.alwaysTop==false){this.updatedY=$(window).scrollTop()+this.origY;if(this.alwaysVisible){if(this.origX+this.width>this.windowWidth())
this.updatedX=this.windowWidth()-this.width+$(window).scrollLeft();if(this.origY+this.height>this.windowHeight())
{this.updatedY=$(window).scrollTop()+this.windowHeight()-this.height;if(this.updatedY<this.origY)this.updatedY=this.origY;}}}
else
{if($(window).scrollTop()>this.origY)
{this.updatedY=$(window).scrollTop()+5;}
else
{this.updatedY=this.origY+5;}}
this.dx=Math.abs(this.updatedX-this.currentX);this.dy=Math.abs(this.updatedY-this.currentY);return this.dx||this.dy;}
FloatObject.prototype.windowHeight=function()
{var de=document.documentElement;return self.innerHeight||(de&&de.clientHeight)||document.body.clientHeight;}
FloatObject.prototype.windowWidth=function()
{var de=document.documentElement;return self.innerWidth||(de&&de.clientWidth)||document.body.clientWidth;}
FloatObject.prototype.move=function()
{if(this.jqObj.css("position")!="absolute")return;var cx=0;var cy=0;if(this.dx>0)
{if(this.dx<this.steps/2)
cx=(this.dx>=1)?1:0;else
cx=Math.round(this.dx/this.steps);if(this.currentX<this.updatedX)
this.currentX+=cx;else
this.currentX-=cx;}
if(this.dy>0)
{if(this.dy<this.steps/2)
cy=(this.dy>=1)?1:0;else
cy=Math.round(this.dy/this.steps);if(this.currentY<this.updatedY)
this.currentY+=cy;else
this.currentY-=cy;}
this.jqObj.css({'left':this.currentX,'top':this.currentY});}
$.floatMgr={FOArray:new Array(),timer:null,initializeFO:function(jqObj,params)
{var settings=$.extend({x:0,y:0,speed:'normal',alwaysVisible:false,alwaysTop:false},params||{});var newFO=new FloatObject(jqObj,settings);$.floatMgr.FOArray.push(newFO);if(!$.floatMgr.timer)$.floatMgr.adjustFO();if(!$.floatMgr.registeredEvents)
{$(window).bind("resize",$.floatMgr.onChange);$(window).bind("scroll",$.floatMgr.onChange);$.floatMgr.registeredEvents=true;}},adjustFO:function()
{$.floatMgr.timer=null;var moveFO=false;for(var i=0;i<$.floatMgr.FOArray.length;i++)
{FO=$.floatMgr.FOArray[i];if(FO.updateLocation())moveFO=true;}
if(moveFO)
{for(var i=0;i<$.floatMgr.FOArray.length;i++)
{FO=$.floatMgr.FOArray[i];FO.move();}
if(!$.floatMgr.timer)$.floatMgr.timer=setTimeout($.floatMgr.adjustFO,50);}},stopFloatChk:false,onChange:function()
{if(!$.floatMgr.timer&&!$.floatMgr.stopFloatChk)$.floatMgr.adjustFO();}};$.fn.makeFloat=function(params){var obj=this.eq(0);$.floatMgr.initializeFO(obj,params);if($.floatMgr.timer==null)$.floatMgr.adjustFO();return obj;};$.fn.stopFloat=function(params){$.floatMgr.stopFloatChk=true;};$.fn.restartFloat=function(params){$.floatMgr.stopFloatChk=false;};})(jQuery);