Preloader to a form

Hi !

Here is what I need to code..

If(javascript is enabled){

push the list of students downwards
show a circular preloader in upper area of webpage
show a small form A in upper area of webpage..

}else {
show a small form form A
}
Any suggestion, where I can find a good tutorial on preloader...

 

can not do this, if JS disabled, browsers process the CSS to display/hide the form

Free JavaScript Code | HTML-JS-CSS Encoding | CSS Menus​

 

i thinks he can write those forms with javascript!
for example
<script type="text/javascript">
document.write('push the list of students downwards etc...);
</script>

well if javascript was disable, it won't writes at first!

and use of noscript tag. this tag contents only display, if the browser javascript disabled.
<noscript>
show a small form form A
</noscript>

need to little work, but can be done.