Inserting elements into a page

The following code snippet is to help insert a code snippet into a page without using document.write.

    //javascript Insert element without document.write
    function insert() {
        var insertElement = getNewElement(‘div’,‘ElementID’, ‘ElementName’);
        var targetElement = document.getElementById(‘targetId’);
        insertAfter(insertElement , targetElement);
    }
    /* insert a new element after the targetelement */
    function insertAfter(newElement, targetElement) {
        var parent = targetElement.parentNode;
        if (parent.lastChild == targetElement) {
            parent.appendChild(newElement);
        }
        else {
            parent.insertBefore(newElement, targetElement.nextSibling);
        }
    }
    // Get new element of 1⁄1 pixel size
    function getNewElement(elementTag,elementID,elementName) {
        var newElement = document.createElement(elementTag);
        newElement.id = elementID;
        newElement.name = elementName;
        newElement.width = ‘1’;
        newElement.height = ‘1’;
        newElement.frameborder = ‘1’;
        newElement.marginwidth = ‘1’;
        newElement.marginheight = ‘1’;
        newElement.vspace = ‘1’;
        newElement.hspace = ‘1’;
        newElement.alltransparency = ‘true’;
        return newElement;
    }

As a side we can also get the insert scripts by figuring out the script source:

    //javascript Get the last script tag in javascript
    function getLastScriptElement(url) {
        var scripts = document.getElementsByTagName(‘script’);
        var matchUrl = ‘js/sample.js’.toLowerCase();
        for (var i = 0; i < scripts.length; i++) {
            var srcUrl = scripts[i].src.toLowerCase();
            var match = srcUrl.match(matchUrl);
            //if (scripts[i].src.toLowerCase() == url.toLowerCase() + ‘js/sample.js’.toLowerCase())
            if (null != match) {
                break;
            }
        }
        if (undefined == scripts[i + 1]) {
            return scripts[i];
        } else {
            return scripts[i +1];
        }
    }