Display a grapic - I know it's simple, but I just can't get it to work

**jimweinberg** · 01-28-2013, 12:15 PM

Right now I've got a terrible sinus condition so my brain probably isn't functioning properly. I'm hoping someone will take pity on me and help me out.

I've got a simple HTML page used to specify files for uploading. The uploading is done with a PHP routine. It works fine except that larger files take a long time. I just want to display an animated 'wait' gif while the php file processes. I want it to display in the middle of the page (not in a new window) when the Submit button is clicked (after checking to make sure the userid and password have been entered). I know that's simple, but I just can't get it to work. Here's the HTML code. I've put in a comment where (when) I want the graphic to display.

HTML Code:

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
  <title>File Upload Page</title>
<script type="text/javascript">
function checkrequired(which) {
var pass=true;
if (document.images) {
for (i=0;i<which.length;i++) {
var tempobj=which.elements[i];
if((tempobj.name == "user" || tempobj.name == "passwd") && tempobj.value=='') {
pass=false;
break;
     }
   }
}
if (!pass) {
shortFieldName=tempobj.name.substring(0,30).toUpperCase();
alert("Please enter your Username and Password");
tempobj.focus();
return false;
}
else

// DISPLAY GRAPHIC NOW

return true;
}
</script>
</head>

<body>
<p>&nbsp;<p>
<p>
<font size=+2>
<center>
Welcome to the File Uploader.
<p>&nbsp;<p>
<table align="center" valign="middle" border=2>
<tr><td>
<table border=0>
<tr>
<td align="center">
<form enctype="multipart/form-data" action="uploader.php" method="post" onsubmit="return checkrequired(this);">
<input type="hidden" name="MAX_FILE_SIZE" value="3000000" />
<p>Select up to five files to upload.<br>File size must be less than 2.4MB.<br>
<input name="graphicfile[]" type="file" size=40 value=""><br>
<input name="graphicfile[]" type="file" size=40 value=""><br>
<input name="graphicfile[]" type="file" size=40 value=""><br>
<input name="graphicfile[]" type="file" size=40 value=""><br>
<input name="graphicfile[]" type="file" size=40 value=""><br>

</td>
</tr>
<tr height=20><td align="center" valign="middle"><u>User Authorization</u></td>
</tr>
<tr><td>Username: <input type='text' name='user' >  Password: <input type='password' name='passwd'>
<br><center>Note: Both Username and Password are case sensitive.</td>
</tr>
<tr height=40><td align="center" valign="bottom">
<input value="Upload Files" type="submit"></p></td>
</form>
</table>
</td></tr></table>
</body>

Thanks,

**vwphillips** · 01-28-2013, 03:17 PM

Code:

        <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
        <html>
        <head>
          <title>File Upload Page</title>
<style type="text/css">
<!--

.mask {
  position:fixed;z-Index:101;visibility:hidden;left:0px;top:0px;width:100%;height:800px;
}

.mask IMG {
  position:absolute;
}

-->
</style>

<script type="text/javascript">
        function checkrequired(which) {
        var pass=true;
        if (document.images) {
        for (i=0;i<which.length;i++) {
        var tempobj=which.elements[i];
        if((tempobj.name == "user" || tempobj.name == "passwd") && tempobj.value=='') {
        pass=false;
        break;
             }
           }
        }
        if (!pass) {
        shortFieldName=tempobj.name.substring(0,30).toUpperCase();
        alert("Please enter your Username and Password");
        tempobj.focus();
        return false;
        }
        else

        // DISPLAY GRAPHIC NOW
         var msk=document.getElementById('mask'),img=msk.getElementsByTagName('IMG')[0];
         img.style.left=(msk.offsetWidth-img.offsetWidth)/2+'px';
         img.style.top=(msk.offsetHeight-img.offsetHeight)/2+'px';
         msk.style.visibility='visible';

        return true;
        }
        </script>
        </head>

        <body>
        <p>&nbsp;<p>
        <p>
        <font size=+2>
        <center>
        Welcome to the File Uploader.
        <p>&nbsp;<p>
        <table align="center" valign="middle" border=2>
        <tr><td>
        <table border=0>
        <tr>
        <td align="center">
        <form enctype="multipart/form-data" action="uploader.php" method="post" onsubmit="return checkrequired(this);">
        <input type="hidden" name="MAX_FILE_SIZE" value="3000000" />
        <p>Select up to five files to upload.<br>File size must be less than 2.4MB.<br>
        <input name="graphicfile[]" type="file" size=40 value=""><br>
        <input name="graphicfile[]" type="file" size=40 value=""><br>
        <input name="graphicfile[]" type="file" size=40 value=""><br>
        <input name="graphicfile[]" type="file" size=40 value=""><br>
        <input name="graphicfile[]" type="file" size=40 value=""><br>

        </td>
        </tr>
        <tr height=20><td align="center" valign="middle"><u>User Authorization</u></td>
        </tr>
        <tr><td>Username: <input type='text' name='user' >  Password: <input type='password' name='passwd'>
        <br><center>Note: Both Username and Password are case sensitive.</td>
        </tr>
        <tr height=40><td align="center" valign="bottom">
        <input value="Upload Files" type="submit"></p></td>
        </form>
        </table>
        </td></tr></table>
        <div id="mask" class="mask" >
         <img src="http://www.vicsjavascripts.org.uk/StdImages/1.gif" alt="loading">
        </div>
        </body>

**jimweinberg** · 01-28-2013, 04:37 PM

Vic.

Many thanks. It works great. One thing, I adjusted the top and left values so my graphic would fall in the middle of the window.

HTML Code:

  position:fixed;z-Index:101;visibility:hidden;left:500px;top:200px;width:100px;height:100px;

It does in everything but IE. Does IE require a different style definition?

Thanks again.

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