add more images

<script language="javascript" type="text/javascript">

       var a=1;

        function AddMoreImages() {

var fileUploadarea = document.getElementById("fileUploadarea");

//var newLine = document.createElement("br");

            //fileUploadarea.appendChild(newLine);

            var newFile = document.createElement("input");

            newFile.type = "file";

newFile.setAttribute("id", "FileUpload" + a);

            newFile.setAttribute("name", "file[]");

            newFile.setAttribute("class", "browse-snap");

            var div = document.createElement("div");

            div.appendChild(newFile);

            div.setAttribute("id", "div" + a );

            fileUploadarea.appendChild(div);

             var newbot= document.createElement("input");

                newbot.type="Button";

                newbot.setAttribute("id","b" + a);

                newbot.setAttribute("value","remove" + a);

                newbot.setAttribute("class","close-btn");

                newbot.setAttribute("onclick","deletefile(this.id);");

                var divid=document.getElementById("div" + a);

               fileUploadarea.appendChild(div).appendChild(newbot);

              

            a++;

            return false;

        }

       

        function deletefile(abf)

        {

        a--;

        var abf1 = abf.split("b");

        //var uplod=document.getElementById("fileUploadarea");

        var im=document.getElementById("div" + abf1[1]);

        im.parentNode.removeChild(im);

        return false;

       

        } 

    </script>

<div class="browse-btn-showroom">

<div id="fileUploadarea">

           

        </div>

        &nbsp;

        <input class='add_more' id="btnAddMoreImages" type="button" 

value="Add more images" onClick="AddMoreImages();" />

       

    </div>