Why doesn't an onMouseOver action appear to be working in javaScript?

Question

I'm having an issue with this function call for some reason, and don't know why (it gets called every time):

box = document.getElementById("object");
box.onmouseover=function();

Answer 1

Take a look at this fiddle. hoverhandler is function-handler (just as the example), that works every time when mouseover event is fired on div-two. To show that it works, it changes the background color of div-one. Hope this example will help you.