jquery ajax/load event on div drop

Hello,
I am trying to load a php page into DIV B when DIV A is dropped on it.
My question is:
how do I pass a variable with my jquery load.
this is what I have:
.bind( "drop", function( event ){
$( this ).load("somefile.php?rec="+event.dragDiv.title+"");
}
everything works fine when I remove the +event.dragDiv.title+""