Reading CSS value using JavaScript

Question

This works:

Answer 1

Try the following

window.onload = function(){

var x = document.getElementById("hello");
var y ="";
if (x.currentStyle)
    y = x.currentStyle['width'];
else if (window.getComputedStyle)
    y = document.defaultView.getComputedStyle(x,null).getPropertyValue('width');
alert(y);



};

It was inspired from something I read Here