code: function(el){
  		if(!pzpr.env.browser){
  			return { top:0, bottom:0, left:0, right:0, height:0, width:0};
  		}
  		var rect = el.getBoundingClientRect(), scrollLeft, scrollTop;
  		if(window.scrollX!==void 0){
  			scrollLeft = window.scrollX;
  			scrollTop  = window.scrollY;
  		}
  		else{
  			/* IE11以下向け */
  			var _html = document.documentElement;
  			scrollLeft = _html.scrollLeft;
  			scrollTop  = _html.scrollTop;
  		}
  		var left   = rect.left   + scrollLeft;
  		var top    = rect.top    + scrollTop;
  		var right  = rect.right  + scrollLeft;
  		var bottom = rect.bottom + scrollTop;
  		return { top:top, bottom:bottom, left:left, right:right, height:(bottom-top), width:(right-left)};
  	}
docs: -------------------------------------------------------------------------------- pzpr.util.getRect()   エレメントの四辺の座標を返す --------------------------------------------------------------------------------