this.previewEl.dom.innerHTML = '';
var canvasEl = document.createElement("canvas");
var contextEl = canvasEl.getContext("2d");
this.previewEl.dom.innerHTML = '';
var canvasEl = document.createElement("canvas");
var contextEl = canvasEl.getContext("2d");
canvasEl.width = this.imageEl.OriginWidth * this.getScaleLevel();
canvasEl.height = this.imageEl.OriginWidth * this.getScaleLevel();
canvasEl.width = this.imageEl.OriginWidth * this.getScaleLevel();
canvasEl.height = this.imageEl.OriginWidth * this.getScaleLevel();