Question

I can’t make javascript to get more than one element with the class I specify.. I’m using classes on purpose!! If I have 5 divs with the same class, how should I call them?

onmouseover="document.getElementById('logo').style.display='inline';" 
onmouseout="document.getElementById('logo').style.display='none';"

onmouseover="document.getElementsByClassName('new')[0].style.MozOpacity=0.4;" 
onmouseout="document.getElementsByClassName('new')[0].style.MozOpacity=1;"

And can I make something like : .getElementsByClassName('new,new2,new3')

Answer 1

If you are able to use jQuery, I would highly recommend it, it makes such things trivial:

$('#idOfYourElement')
  .mouseenter(function() { $('.new, .new2, .new3').css({MozOpacity : 0.4});)
  .mouseleave(function() { $('.new, .new2, .new3').css({MozOpacity : 1}););