docs: function() {
  			var h = '',displayStr = '',bottonStr='';
  			if(this.countContentHeight){
  				var wh = $('#' + this.options.id)[0].offsetHeight;
  				this.wholeHeight = wh;
  				if (wh > 0) {
  					this.contentHeight = parseInt(wh) - this.exceptContentHeight > 0?parseInt(wh) - this.exceptContentHeight:0;
  					if(this.contentHeight > 0){
  						h = 'style="max-height:' + this.contentHeight + 'px;"';
  					}
  				}
  			}
  			var htmlStr = '<div id="' + this.options.id + '_content" class="u-grid-content" ' + h + '>';
  			if (this.options.showNumCol || this.options.multiSelect) {
  				htmlStr += this.createContentLeft();
  				if(!(this.contentWidth > this.contentMinWidth)){
  					displayStr = 'display:none;';
  					bottonStr = 'bottom:0px;'
  				}
  				htmlStr += this.createContentSumRow(bottonStr);
  				if(u.isIOS){
  					displayStr += 'width:0px;';
  				}
  				htmlStr += '<div class="u-grid-content-left-bottom" id="' + this.options.id + '_content_left_bottom" style="width:' + (this.leftW + this.fixedWidth) + 'px;'+displayStr+'">';
  				htmlStr += '</div>';
  			}
  			htmlStr += this.createContentTableFixed();
  			htmlStr += this.createContentTable();
  			htmlStr += '</div>';
  			return htmlStr;
  		}