<div id="print_this" class="modal-body">

function PrintRequest() {
    printElement(document.getElementById("print_this"));
    window.print();
}

function printElement(elem, append, delimiter ) {
    var domClone = elem.cloneNode(true);

    var $printSection = document.getElementById("printSection");

    if (!$printSection) {
        var $printSection = document.createElement("div");
        $printSection.id = "printSection";
        //var css = document.createElement("style");
        //css.type = "text/css";
        //css.href = css_path;
        //document.body.appendChild(css);
        document.body.appendChild($printSection);

    }

    if (append !== true) {
        $printSection.innerHTML = "";
    }

    else if (append === true) {
        if (typeof (delimiter) === "string") {
            $printSection.innerHTML += delimiter;
        }
        else if (typeof (delimiter) === "object") {
            $printSection.appendChlid(delimiter);
        }
    }

    $printSection.appendChild(domClone);
}