final Element lineEl = worksheetElement.appendElement("div").addClass("line").attr("id", "line" + lineNo);
if (lineNo == 1) {
lineEl.addClass("firstLine");
}
final Element lineNumber=lineEl.appendElement("div").attr("class","lineNumberMarker");
lineNumber.text(lineNo+".");
final Element question = lineEl.appendElement("div").attr("class", "question")
.attr("contentEditable", "true");
final Element equals = lineEl.appendElement("div").attr("class", "equals").text("=")
.attr("style", "display:none;");
lineEl.appendElement("div").attr("class", "answer").attr("style", "display:none;");