Instantiate new element class using javascript

[-ParadoX-]

How can I instantiate an existing div element using javascript? Lets say I have:\[code\] <div class="container"> <div class="myclass">TROLL FACE</div> </div>\[/code\]I want to create as many 'myclass' element inside the 'container' class as I want using javascript. How can I do this?Please help, thanks.