JavaScript: displaying a file in a text area: -

i want display content of file in text area. use script when click in open button text doesn't appear:

   function loadfileastext()    {     document.getelementbyid("textonormal").scrolltop=0;     var filetoload = document.getelementbyid("filetoload").files[0];      var filereader = new filereader();     filereader.onload = function(fileloadedevent)     {         var textfromfileloaded = fileloadedevent.target.result;         document.getelementbyid("textonormal").value =   textfromfileloaded;     };     filereader.readastext(filetoload, "utf-8");     id=1;     } 

textonormal: id of text area

read file of content in onchange event of file upload control.

        function onupload() {             var obj = document.getelementbyid("<%=fleuldlogo.clientid%>");             var source = obj.value;             var file = obj.files[0];             var textarea=$("#txtar");             var reader = new filereader();             reader.onloadend = function () {             textarea.value= reader.result;              }                     reader.readastext(file);             return true;         }