Quintus.DOM = function(Q) {
    
    Q.setupDOM = function(id,options) {
      options = options || {};
      id = id || "quintus";
      Q.el = $(_.isString(id) ? "#" + id : id);
      if(Q.el.length === 0) {
        Q.el = $("<div>")
                  .attr('id',id)
                  .css({width: 320, height:420 })
                  .appendTo("body");
      }
      if(options.maximize) {
        var w = window.width();
        var h = window.height();
        Q.el.css({width:w,height:h});
      }
     Q.wrapper = Q.el
                   .wrap("<div id='" + id + "_container'/>")
                   .parent()
                   .css({ width: Q.el.width(),
                          height: Q.el.height(),
                          margin: '0 auto' });
      Q.el.css({ position:'relative', overflow: 'hidden' });
      Q.width = Q.el.width();
      Q.height = Q.el.height();
      setTimeout(function() { window.scrollTo(0,1); }, 0);
      window.bind('orientationchange',function() {
        setTimeout(function() { window.scrollTo(0,1); }, 0);
      });
      return Q;
    };
  
  (function() { 
      function translateBuilder(attribute) {
        return function(dom,x,y) {
          dom.style[attribute] = 
          "translate(" + Math.floor(x) + "px," +
          Math.floor(y) + "px)";
        };
      }
      function translate3DBuilder(attribute) {
        return function(dom,x,y) {
          dom.style[attribute] = 
          "translate3d(" + Math.floor(x) + "px," +
          Math.floor(y) + "px,0px)";
        };
      }
      function scaleBuilder(attribute) {
        return function(dom,scale) {
          dom.style[attribute + 'Origin'] = "0% 0%";
          dom.style[attribute] = "scale(" + scale + ")";
        };
      }
      function fallbackTranslate(dom,x,y) {
        dom.style.left = x + "px";
        dom.style.top = y + "px";
      }
      var has3d =  ('WebKitCSSMatrix' in window && 
                    'm11' in new WebKitCSSMatrix());
      var dummyStyle = $("<div>")[0].style;
      var transformMethods = ['transform',
                              'webkitTransform',
                              'MozTransform',
                              'msTransform' ];
      for(var i=0;i<transformMethods.length;i++) {
        var transformName = transformMethods[i];
        if(!_.isUndefined(dummyStyle[transformName])) {
          if(has3d) {
            Q.positionDOM = translate3DBuilder(transformName);
          } else {
            Q.positionDOM = translateBuilder(transformName); 
          }
          Q.scaleDOM = scaleBuilder(transformName);
          break;
        }
      }
      Q.positionDOM = Q.positionDOM || fallbackTranslate;
      Q.scaleDOM = Q.scaleDOM || function(scale) {};
    })();
  
    (function() {
       function transitionBuilder(attribute,prefix){
        return function(dom,property,sec,easing) {
          easing = easing || "";
          if(property == 'transform') {
            property = prefix + property;
          }
          sec = sec || "1s";
          dom.style[attribute] = property + " " + sec + " " + easing;
        };
      }
      // Dummy method
      function fallbackTransition() { }
      var dummyStyle = $("<div>")[0].style;
      var transitionMethods = ['transition',
                              'webkitTransition',
                              'MozTransition',
                              'msTransition' ];
      var prefixNames = [ '', '-webkit-', '-moz-', '-ms-' ];
      for(var i=0;i<transitionMethods.length;i++) {
        var transitionName = transitionMethods[i];
        var prefixName = prefixNames[i];
        if(!_.isUndefined(dummyStyle[transitionName])) {
          Q.transitionDOM = transitionBuilder(transitionName,prefixName); 
          break;
        }
      }
      Q.transitionDOM = Q.transitionDOM || fallbackTransition;
    })();
  
    Q.DOMSprite = Q.Sprite.extend({
      init: function(props) {
        this._super(props);
        this.el = $("<div>").css({
          width: this.p.w,
          height: this.p.h,
          zIndex: this.p.z || 0,
          position: 'absolute'
        });
        this.dom = this.el[0];
        this.rp = {};
        this.setImage();
        this.setTransform();
      },
    
      setImage: function() {
        var asset;
        if(this.sheet()) {
          asset = Q.asset(this.sheet().asset);
        } else {
          asset = this.asset();
        }
        if(asset) {
          this.dom.style.backgroundImage = "url(" + asset.src + ")";
        }
      },
    
      setTransform: function() {
        var p = this.p;
        var rp = this.rp;
        if(rp.frame !== p.frame) {
          if(p.sheet) {
            this.dom.style.backgroundPosition = 
                (-this.sheet().fx(p.frame)) + "px " + 
                (-this.sheet().fy(p.frame)) + "px";
          } else {
            this.dom.style.backgroundPosition = "0px 0px";
          }
          rp.frame = p.frame;
        }
        if(rp.x !== p.x || rp.y !== p.y) {
          Q.positionDOM(this.dom,p.x,p.y);
          rp.x = p.x;
          rp.y = p.y;
        } 
      },
  
      hide: function() {
        this.dom.style.display = 'none';
      },
  
      show: function() {
        this.dom.style.display = 'block';
      },
  
      draw: function(ctx) {
        this.trigger('draw');
      },
  
      step: function(dt) {
        this.trigger('step',dt);
        this.setTransform();
      },
  
      destroy: function() {
        if(this.destroyed) return false;
        this._super();
        this.el.remove();
      }
    });
    
  
    if(Q.Stage) {
      Q.DOMStage = Q.Stage.extend({
        init: function(scene) {
          this.el = $("<div>").css({
            top:0,
            position:'relative'
          }).appendTo(Q.el);
          this.dom = this.el[0];
          this.wrapper = this.el.wrap('<div>').parent().css({
            position:'absolute',
            left:0,
            top:0
          });
          this.scale = 1;
          this.wrapper_dom = this.wrapper[0];
          this._super(scene);
        },
  
        insert: function(itm) {
          if(itm.dom) { this.dom.appendChild(itm.dom); };
          return this._super(itm);
        },
  
        destroy: function() {
          this.wrapper.remove();
          this._super();
        },
  
        rescale: function(scale) {
          this.scale = scale;
          Q.scaleDOM(this.wrapper_dom,scale);
        },
  
        centerOn: function(x,y) {
          this.x = Q.width/2/this.scale -  x;
          this.y = Q.height/2/this.scale - y;
          Q.positionDOM(this.dom,this.x,this.y);
        }
      });
    }
  
    Q.domOnly = function() {
      Q.Stage = Q.DOMStage;
      Q.setup = Q.setupDOM;
      Q.Sprite = Q.DOMSprite;
      return Q;
    };
    
    Q.DOMTileMap = Q.DOMSprite.extend({
      // Expects a sprite sheet, along with cols and rows properties
      init:function(props) {
        var sheet = Q.sheet(props.sheet);
        this._super(_(props).extend({
          w: props.cols * sheet.tilew,
          h: props.rows * sheet.tileh,
          tilew: sheet.tilew,
          tileh: sheet.tileh
        }));
        this.shown = [];
        this.domTiles = [];
      },
  
      setImage: function() { },
    
      setup: function(tiles,hide) {
        this.tiles = tiles;
        for(var y=0,height=tiles.length;y<height;y++) {
          this.domTiles.push([]);
          this.shown.push([]);
          for(var x=0,width=tiles[0].length;x<width;x++) {
            var domTile = this._addTile(tiles[y][x]);
            if(hide) { domTile.style.visibility = 'hidden'; }
            this.shown.push(hide ? false : true);
            this.domTiles[y].push(domTile);
          }
        }
      },
  
      _addTile: function(frame) {
        var p = this.p;
        var div = document.createElement('div');
        div.style.width = p.tilew + "px";
        div.style.height = p.tileh + "px";
        div.style.styleFloat = div.style.cssFloat = 'left';
        this._setTile(div,frame);
        this.dom.appendChild(div);
        return div;
      },
  
      _setTile: function(dom,frame) {
        var asset = Q.asset(this.sheet().asset);
        dom.style.backgroundImage = "url(" + asset.src + ")";
        dom.style.backgroundPosition = (-this.sheet().fx(frame)) +"px " + (-this.sheet().fy(frame)) + "px";
      },
  
      validTile: function(x,y) {
        return (y >= 0 && y < this.p.rows) && 
               (x >= 0 && x < this.p.cols);
      },
  
      get: function(x,y) { return this.validTile(x,y) ? 
                                  this.tiles[y][x] : null; },
  
      getDom: function(x,y) { return this.validTile(x,y) ? 
                                     this.domTiles[y][x] : null; },
      set: function(x,y,frame) {
        if(!this.validTile(x,y)) return;
        this.tiles[y][x] = frame;
        var domTile = this.getDom(x,y);
        this._setFile(domTile,frame);
      },
  
      show: function(x,y) {
        if(!this.validTile(x,y)) return;
        if(this.shown[y][x]) return;
        this.getDom(x,y).style.visibility = 'visible';
        this.shown[y][x] = true;
      },
  
      hide: function(x,y) {
        if(!this.validTile(x,y)) return;
        if(!this.shown[y][x]) return;
        this.getDom(x,y).style.visibility = 'hidden';
        this.shown[y][x] = false;
      }
    }); 
  
  };