16010 				var columnIndex = scale.trace_indexes[day.start_date.valueOf()];
16011 				if(smartRendering && !isColumnVisible(columnIndex, scale, viewport)){
16018 					renderedResourceLines[resource.id][columnIndex] = cell;
16041 				var columnIndex = scale.trace_indexes[day.start_date.valueOf()];
16042 				if(!isColumnVisible(columnIndex, scale, viewport)){
16043 					detachRenderedResourceLine(resource.id, columnIndex);
16047 				if(!renderedResourceLines[resource.id] || !renderedResourceLines[resource.id][columnIndex]){
16051 						renderedResourceLines[resource.id][columnIndex] = cell;
16054 …ce.id] && renderedResourceLines[resource.id][columnIndex] && !renderedResourceLines[resource.id][c…
16055 					node.appendChild(renderedResourceLines[resource.id][columnIndex]);
16094 	function isColumnVisible(columnIndex, scale, viewPort){  argument
16095 		var width = scale.width[columnIndex];
16096 		var cellLeftCoord = scale.left[columnIndex] - width;
16097 		var cellRightCoord = scale.left[columnIndex] + width;
16220 				var columnIndex = scale.trace_indexes[day.start_date.valueOf()];
16221 				if(smartRendering && !isColumnVisible(columnIndex, scale, viewport)){
16232 					renderedHistogramCells[resource.id][columnIndex] = el;
16265 				var columnIndex = scale.trace_indexes[day.start_date.valueOf()];
16270 				if(smartRendering && !isColumnVisible(columnIndex, scale, viewport)){
16271 					detachRenderedHistogramCell(resource.id, columnIndex);
16276 				if(!renderedCell || !renderedCell[columnIndex]){
16280 						renderedHistogramCells[resource.id][columnIndex] = el;
16283 				else if(renderedCell && renderedCell[columnIndex] && !renderedCell[columnIndex].parentNode){
16284 					node.appendChild(renderedCell[columnIndex]);
24012 	function isRendered(item, columnIndex){  argument
24013 		if(renderedCells[item.id][columnIndex] && renderedCells[item.id][columnIndex].parentNode){
24020 	function detachRenderedCell(itemId, columnIndex){  argument
24021 		if(renderedCells[itemId] && renderedCells[itemId][columnIndex] &&
24022 			renderedCells[itemId][columnIndex].parentNode
24024 				renderedCells[itemId][columnIndex].parentNode.removeChild(renderedCells[itemId][columnIndex]);
24067 			for (var columnIndex = range.start; columnIndex <= range.end; columnIndex++) {
24068 				var cell = renderOneCell(cfg, columnIndex, item, viewPort, count, cssTemplate, config);
24069 				if(!cell && isRendered(item, columnIndex)){
24070 					detachRenderedCell(item.id, columnIndex);
24078 	function isColumnVisible(columnIndex, scale, viewPort){  argument
24079 		var width = scale.width[columnIndex];
24086 		var cellLeftCoord = scale.left[columnIndex] - width;
24087 		var cellRightCoord = scale.left[columnIndex] + width;
24091 	function renderOneCell(scale, columnIndex, item, viewPort, count, cssTemplate, config){  argument
24092 		var width = scale.width[columnIndex],
24095 		if (isColumnVisible(columnIndex, scale, viewPort)) {//do not render skipped columns
24097 			var cssTemplateContent = cssTemplate(item, scale.trace_x[columnIndex]);
24106 			if(renderedCells[item.id][columnIndex]){
24107 				visibleCells[item.id][columnIndex] = columnIndex;
24108 				return renderedCells[item.id][columnIndex];
24113 			cssclass = "gantt_task_cell" + (columnIndex == count - 1 ? " gantt_last_cell" : "");
24120 			cell.style.left = scale.left[columnIndex] + "px";
24121 			renderedCells[item.id][columnIndex] = cell;
24122 			visibleCells[item.id][columnIndex] = columnIndex;
24156 			for (var columnIndex = range.start; columnIndex <= range.end; columnIndex++) {
24157 				var cell = renderOneCell(cfg, columnIndex, item, viewPort, count, cellTemplate, config);