How do I create a div element with an id that is dynamically used when calling a method on the div element?

First of all I am new to JavaScript. I am using the aloha editor. I want to create text areas dynamically using div tags by assigning id's for each div. Using that id I have to call a method, which is the aloha method. Everything goes fine but the aloha method is not getting the id. On the browser I am getting an empty space rather than an aloha box.

Here is my code..

javascript

     var screen=document.getElementById('addScreens');
     num_q=document.getElementById('numquest').value;

     for(i=0;i<num_q;i++) {   
         div1=document.createElement("div");
         div1.id="multicolumn";
         screen.appendChild(div1);
     }

     //aloha
     $(document).ready(function() {
         $('#multicolumn').aloha(); //multicolumn is not defined
     });

**HTML**

<html>
<body>
 <br><input type="text" name = "numquest" id ="numquest" value="" size="5" style="" disabled>
     <input type="button" value="submit" onclick="getFields();">
<div id="addScreens"> <br> </div>
</body>
</html>

<style type="text/css">

            #multicolumn {

                -webkit-column-width:300px;
                -webkit-column-gap:30px;
                -moz-column-width:300px;
                -moz-column-gap:30px;
                column-width:100px;
                column-gap:30px;
                      width:550px;
                height: 150px;
                margin: 0 auto;
                      overflow-x: auto;
                      overflow-y: auto;
                   }

            </style>

So, how do I have the id of the dynamically created div's accessible everywhere?? Thanks in advance for any ideas.

Solution

You can create the div inside $document ready and then call aloha on it. See the below code for dynamic id generation

 //aloha
    $(document).ready(function() {
         var screen=document.getElementById('addScreens');
         var num_q=document.getElementById('numquest').value;
         for(i=0;i<num_q;i++)
         {   
            var div1=document.createElement("div");
            div1.id = "multicolumn_" + i;
            screen.appendChild(div1);
            $('#' + div1.id).aloha(); 
         }
         //multicolumn is not defined
    });