Problems with draggable

Problems with draggable

Hello everybody i am implementing the draggable in my project but i am expecting problems with the options doesn't work in any browser. Here the code:

function applDrop(widget){
$(widget).draggable({ 
appendTo: 'body',
scroll: true, 
scrollSensitivity: 100,
cancel: null, 
stop:function(event, ui){
cloneWdg(this);//This function clone the widget.
$(this).draggable({scroll: true, scrollSensitivity:100});
}
});
}