Nothing is loaded into my jQuery dialog

Before I had the following jQuery:

var dialogDiv = "<div id='" + dialogId + "'></div>";
 
 $(dialogDiv).load(href, function () {
     ...
 

It worked fine.

Now I changed a little bit like this:

var dialogDiv = "<div id='" + dialogId + "' class='modal hide fade'><div class='modal-body'><p class='body'></p></div></div>";
 
 $('.modal-body p.body').load(href, function () {
     ...
 

Now nothing is loaded into my jQuery dialog. Any idea?

Thanks.

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