function roll(img_name, img_src) {
   document[img_name].src = img_src;
}

Effect.divSwap = function(element,container){
    var div = document.getElementById(container);
    var nodeList = div.childNodes;
    var queue = Effect.Queues.get('menuScope');

    if(queue.toArray().length<1){
        if(Element.visible(element)==false){
            for(i=0;i<nodeList.length;i++){
                if(nodeList.item(i).nodeName=="DIV" && nodeList.item(i).id!=element){
                    if(Element.visible(nodeList.item(i))==true){
                        Effect.Fade(nodeList.item(i),{queue:{position:'end',scope:'menuScope',limit:2}})
                    }
                }
            }
            Effect.Appear(element,{queue:{position:'end',scope:'menuScope',limit:2}})
       }
   }
}

Effect.divSwap2 = function(element,container,element2,container2){
    var div = document.getElementById(container);
    var nodeList = div.childNodes;
    var queue = Effect.Queues.get('menuScope');

    var div2 = document.getElementById(container2);
    var nodeList2 = div2.childNodes;
    var queue2 = Effect.Queues.get('menuScope2');

    if(queue.toArray().length<1){
        if(Element.visible(element)==false){
            for(i=0;i<nodeList.length;i++){
                if(nodeList.item(i).nodeName=="DIV" && nodeList.item(i).id!=element){
                    if(Element.visible(nodeList.item(i))==true){
                        Effect.Fade(nodeList.item(i),{queue:{position:'end',scope:'menuScope',limit:2}})
                    }
                }
            }
            Effect.Appear(element,{queue:{position:'end',scope:'menuScope',limit:2}})
       }
   }

    if(queue2.toArray().length<1){
        if(Element.visible(element2)==false){
            for(i=0;i<nodeList2.length;i++){
                if(nodeList2.item(i).nodeName=="DIV" && nodeList2.item(i).id!=element2){
                    if(Element.visible(nodeList2.item(i))==true){
                        Effect.Fade(nodeList2.item(i),{queue:{position:'end',scope:'menuScope2',limit:2}})
                    }
                }
            }
            Effect.Appear(element2,{queue:{position:'end',scope:'menuScope2',limit:2}})
       }
   }
}

Effect.divSwapSlide = function(element,container){
    var div = document.getElementById(container);
    var nodeList = div.childNodes;
    var queue = Effect.Queues.get('menuScope');

    if(queue.toArray().length<1){
        if(Element.visible(element)==false){
            for(i=0;i<nodeList.length;i++){
                if(nodeList.item(i).nodeName=="DIV" && nodeList.item(i).id!=element){
                    if(Element.visible(nodeList.item(i))==true){
                        Effect.SlideUp(nodeList.item(i),{queue:{position:'end',scope:'menuScope',limit:2}})
                    }
                }
            }
            Effect.SlideDown(element,{queue:{position:'end',scope:'menuScope',limit:2}})
       }
   }
}

Effect.divSwapSquish = function(element,container){
    var div = document.getElementById(container);
    var nodeList = div.childNodes;
    var queue = Effect.Queues.get('menuScope');

    if(queue.toArray().length<1){
        if(Element.visible(element)==false){
            for(i=0;i<nodeList.length;i++){
                if(nodeList.item(i).nodeName=="DIV" && nodeList.item(i).id!=element){
                    if(Element.visible(nodeList.item(i))==true){
                        Effect.Squish(nodeList.item(i),{queue:{position:'end',scope:'menuScope',limit:2}})
                        Effect.Fade(nodeList.item(i),{queue:{position:'end',scope:'menuScope',limit:2}})
                    }
                }
            }
            Effect.SlideDown(element,{queue:{position:'end',scope:'menuScope',limit:2}})
       }
   }
}