How to make elements invisible

How can we make page elements invinsible using javascript...?

Hi Prabeen,

Elements can be made invinsible by changing the "visibility" attribute of the style object associated with your element. Remember that a hidden element still takes up space, use "display" to make the space disappear as well.

if ( x == y) {
myElement.style.visibility = 'visible';
} else {
myElement.style.visibility = 'hidden';
}