Create div at run time using javascript

function creatediv(id, width, height, left, top) {

    var newdiv = document.createElement('newdiv');
    //newdiv.setAttribute('id', id);
    newdiv.style.width = 100;
    newdiv.style.height = 300;
    newdiv.style.position = "absolute";
   

    if (width) {
        newdiv.style.width = 100;
    }

    if (height) {
        newdiv.style.height = 300;
    }

    if ((left || top) || (left && top)) {
        newdiv.style.position = "absolute";

        if (left) {
            newdiv.style.left = left;
        }

        if (top) {
            newdiv.style.top = top;
        }
    }

    newdiv.style.background = "#fff";
    newdiv.style.border = "4px solid #000";
    document.getElementById('dvallitems').style.display = 'block'
    newdiv.appendChild(document.getElementById('dvallitems'));
    newdiv.style.display = 'block';
    //document.body.appendChild(document.getElementById('dvallitems').style.display = 'block');
}