SLibSElement元素操作

        function SElement(eleId){
           var self = SLib.getElement(eleId);
           this.getElement = function (){
                                 return self;
                             }
           this.getXY = function () {
                            return SLib.getXY(self);
                        }
           this.getX =  function () {
                           return  SLib.getXY(self)[0];
                        }
           this.getY = function () {
                            return  SLib.getXY(self)[1];
                        }
           this.setXY =  function (x,y){
                         self.style.left = x+"px";
                         self.style.top = y +"px";
                         }
           this.setX = function (x) {
                       self.style.left = x+"px";
                       }
           this.setY = function (y) {
                       self.style.top =  y +"px";
                       }
           this.getStyle = function(s){
                               return self.style[s];
                           }
           this.setStyle = function(s,value){
                                self.style[s] =value;
                           }
           this.getWidth = function(){
                                return self.offsetWidth;
                           }
           this.getHeight = function(){
                                return self.offsetHeight;
                            }
           this.getAttribute =function (s){
                                return self.getAttribute(s);
                              }
           this.getRectangle = function(){
                                   return [this.getWidth(),this.getHeight()];   
                               }
           this.alignTo = function(ele,direction){
                               var l = ele.getX();
                               var t = ele.getY();
                               var w = ele.getWidth();
                               var h = ele.getHeight();
                               switch(direction){
                                  case "lt" :this.setX(l);
                                             this.setY(t);
                                             break;
                                  case "lb" :this.setX(l);
                                             this.setY(t+h);
                                             break;
                                  case "rt" :this.setX(l+w);
                                             this.setY(t);
                                             break;
                                  case "rb" :this.setX(l+w);
                                             this.setY(t+h);
                                             break;
                                     default:break;
                               }
                      
     
                       }
         
    }