Difference between ways for declaring a function

Hi all,
This is probably an easy question, but I was not sure of how to google an answer for it. Is there any real difference between these two function declarations?

function DoSomething(parm) {
//do something here
}

DoSomething = function(parm) {
//do something here
}

The same goes when defining a custom object. For example:

function MyObject() {
//initialization code
}

MyObject = function() {
//initialization code
}

Thanks.

I think there is no difference, depends on your preference.

As far as I know, whether you assign an anonymous function to a variable or declare it directly is pretty much irrelevant. The only slight difference I can think of is in a closure.

Code:

---

(function() {
function func1 () {

}
var func2 = function () {

};
})();
func1; // undefined
func2; //defined

---

Obviously if you "var func2 = ..." that difference vanishes.

Both can be used for different purposes however. I normally use "function whatever ()" syntax unless I specifically want to assign it to an existing variable, or to an array or something that would be impossible with function whatever().