/* Script by: www.jtricks.com
 * Version: 1.5 (20110204)
 * Latest version: www.jtricks.com/javascript/navigation/floating.html
 */

var floatingMenu={hasInner:typeof(window.innerWidth)=='number',hasElement:typeof(document.documentElement)=='object'&&typeof(document.documentElement.clientWidth)=='number'};var floatingArray=[];floatingMenu.add=function(obj,options){var name;var menu;if(typeof(obj)==="string")name=obj;else
menu=obj;if(options==undefined){floatingArray.push({id:name,menu:menu,targetLeft:0,targetTop:0,snap:true});}else
{floatingArray.push({id:name,menu:menu,targetLeft:options.targetLeft,targetRight:options.targetRight,targetTop:options.targetTop,targetBottom:options.targetBottom,centerX:options.centerX,centerY:options.centerY,prohibitXMovement:options.prohibitXMovement,prohibitYMovement:options.prohibitYMovement,snap:options.snap,ignoreParentDimensions:options.ignoreParentDimensions,scrollContainer:options.scrollContainer,scrollContainerId:options.scrollContainerId});}};floatingMenu.findSingle=function(item){if(item.id)item.menu=document.getElementById(item.id);if(item.scrollContainerId)item.scrollContainer=document.getElementById(item.scrollContainerId);};floatingMenu.move=function(item){if(!item.prohibitXMovement){item.menu.style.left=item.nextX+'px';item.menu.style.right='';}if(!item.prohibitYMovement){item.menu.style.top=item.nextY+'px';item.menu.style.bottom='';}};floatingMenu.scrollLeft=function(item){if(item.scrollContainer)return item.scrollContainer.scrollLeft;var w=window;while(w!=w.parent)w=w.parent;return this.hasInner?w.pageXOffset:this.hasElement?w.document.documentElement.scrollLeft:w.document.body.scrollLeft;};floatingMenu.scrollTop=function(item){if(item.scrollContainer)return item.scrollContainer.scrollTop;var w=window;while(w!=w.parent)w=w.parent;return this.hasInner?w.pageYOffset:this.hasElement?w.document.documentElement.scrollTop:w.document.body.scrollTop;};floatingMenu.windowWidth=function(){return this.hasElement?document.documentElement.clientWidth:document.body.clientWidth;};floatingMenu.windowHeight=function(){if(floatingMenu.hasElement&&floatingMenu.hasInner){return document.documentElement.clientHeight>window.innerHeight?window.innerHeight:document.documentElement.clientHeight}else
{return floatingMenu.hasElement?document.documentElement.clientHeight:document.body.clientHeight;}};floatingMenu.documentHeight=function(){var innerHeight=this.hasInner?window.innerHeight:0;var body=document.body,html=document.documentElement;return Math.max(body.scrollHeight,body.offsetHeight,html.clientHeight,html.scrollHeight,html.offsetHeight,innerHeight);};floatingMenu.documentWidth=function(){var innerWidth=this.hasInner?window.innerWidth:0;var body=document.body,html=document.documentElement;return Math.max(body.scrollWidth,body.offsetWidth,html.clientWidth,html.scrollWidth,html.offsetWidth,innerWidth);};floatingMenu.calculateCornerX=function(item){var offsetWidth=item.menu.offsetWidth;if(item.centerX)return this.scrollLeft(item)+(this.windowWidth()-offsetWidth)/2;var result=this.scrollLeft(item)-item.parentLeft;if(item.targetLeft==undefined){result+=this.windowWidth()-item.targetRight-offsetWidth;}else
{result+=item.targetLeft;}if(document.body!=item.menu.parentNode&&result+offsetWidth>=item.confinedWidthReserve){result=item.confinedWidthReserve-offsetWidth;}if(result<0)result=0;return result;};floatingMenu.calculateCornerY=function(item){var offsetHeight=item.menu.offsetHeight;if(item.centerY)return this.scrollTop(item)+(this.windowHeight()-offsetHeight)/2;var result=this.scrollTop(item)-item.parentTop;if(item.targetTop===undefined){result+=this.windowHeight()-item.targetBottom-offsetHeight;}else
{result+=item.targetTop;}if(document.body!=item.menu.parentNode&&result+offsetHeight>=item.confinedHeightReserve){result=item.confinedHeightReserve-offsetHeight;}if(result<0)result=0;return result;};floatingMenu.computeParent=function(item){if(item.ignoreParentDimensions){item.confinedHeightReserve=this.documentHeight();item.confinedWidthReserver=this.documentWidth();item.parentLeft=0;item.parentTop=0;return;}var parentNode=item.menu.parentNode;var parentOffsets=this.offsets(parentNode,item);item.parentLeft=parentOffsets.left;item.parentTop=parentOffsets.top;item.confinedWidthReserve=parentNode.clientWidth;var obj=parentNode;while(obj.clientHeight<item.menu.offsetHeight){obj=obj.parentNode;}var hasHeightOffsets=this.offsets(obj,item);item.confinedHeightReserve=obj.clientHeight
-(parentOffsets.top-hasHeightOffsets.top);};floatingMenu.offsets=function(obj,item){var result={left:0,top:0};if(obj===item.scrollContainer)return;while(obj.offsetParent&&obj.offsetParent!=item.scrollContainer){result.left+=obj.offsetLeft;result.top+=obj.offsetTop;obj=obj.offsetParent;}if(window==window.parent)return result;var iframes=window.parent.document.body.getElementsByTagName("IFRAME");for(var i=0;i<iframes.length;i++){if(iframes[i].contentWindow!=window)continue;obj=iframes[i];while(obj.offsetParent){result.left+=obj.offsetLeft;result.top+=obj.offsetTop;obj=obj.offsetParent;}}return result;};floatingMenu.doFloatSingle=function(item){this.findSingle(item);var stepX,stepY;this.computeParent(item);var cornerX=this.calculateCornerX(item);var stepX=(cornerX-item.nextX)*.07;if(Math.abs(stepX)<.5&&item.snap||Math.abs(cornerX-item.nextX)==1){stepX=cornerX-item.nextX;}var cornerY=this.calculateCornerY(item);var stepY=(cornerY-item.nextY)*.07;if(Math.abs(stepY)<.5&&item.snap||Math.abs(cornerY-item.nextY)==1){stepY=cornerY-item.nextY;}if(Math.abs(stepX)>0||Math.abs(stepY)>0){item.nextX+=stepX;item.nextY+=stepY;this.move(item);}};floatingMenu.fixTargets=function(){};floatingMenu.fixTarget=function(item){};floatingMenu.doFloat=function(){this.fixTargets();for(var i=0;i<floatingArray.length;i++){this.fixTarget(floatingArray[i]);this.doFloatSingle(floatingArray[i]);}setTimeout('floatingMenu.doFloat()',20);};floatingMenu.insertEvent=function(element,event,handler){if(element.addEventListener!=undefined){element.addEventListener(event,handler,false);return;}var listener='on'+event;if(element.attachEvent!=undefined){element.attachEvent(listener,handler);return;}var oldHandler=element[listener];element[listener]=function(e){e=(e)?e:window.event;var result=handler(e);return(oldHandler!=undefined)&&(oldHandler(e)==true)&&(result==true);};};floatingMenu.init=function(){floatingMenu.fixTargets();for(var i=0;i<floatingArray.length;i++){floatingMenu.initSingleMenu(floatingArray[i]);}setTimeout('floatingMenu.doFloat()',100);};floatingMenu.initSingleMenu=function(item){this.findSingle(item);this.computeParent(item);this.fixTarget(item);item.nextX=this.calculateCornerX(item);item.nextY=this.calculateCornerY(item);this.move(item);};floatingMenu.insertEvent(window,'load',floatingMenu.init);if(typeof(jQuery)!=='undefined'){(function($){$.fn.addFloating=function(options){return this.each(function(){floatingMenu.add(this,options);});};})(jQuery);}