Javascript to show a division dynamically

//
//function createDiv()
//{
//var divTag = document.createElement("div");
//divTag.id = "div1";
//divTag.setAttribute("align","center");
//divTag.style.margin = "0px auto";
//divTag.innerHTML = "Piyush James Bond has created a Division";
//document.body.appendChild(divTag);
//}
//