javacript code not working in firefox but works fine in IE
 

var head = headElement.firstChild;
var headTable = headElement.firstChild;
var body = bodyElement.firstChild;
var bodyTable = bodyElement.firstChild;

var a = body.offsetWidth;
alert(a);
var scrollBarWidth = body.offsetWidth - body.clientWidth;
headTable.style.width = Math.max(0, bodyTable.offsetWidth + scrollBarWidth);

Re: javacript code not working in firefox but works fine in IE
 

offsetWidth is not supported in all browsers

var x,y;

var test1 = document.body.scrollHeight;

var test2 = document.body.offsetHeight

if (test1 > test2) // all but Explorer Mac

{

        x = document.body.scrollWidth;

        y = document.body.scrollHeight;

}

else // Explorer Mac;

     //would also work in Explorer 6 Strict, Mozilla and Safari

{

        x = document.body.offsetWidth;

        y = document.body.offsetHeight;

}