Customizes the helper element to be used to display the position that the node will be inserted to. If a function is specified, it must return a DOMElement.
$(function () {
// Get value
var returnsValue; // Type: any
returnsValue = $(".selector").wijtree("option", "dropVisual");
// Set value
var newValue; // Type: any
$(".selector").wijtree("option", "dropVisual", newValue);
});
