Javescript error in IE Explorer 7

[upirate]

function alignFI() {
var height, width;
if (document.all)
height = document.body.offsetHeight, width = document.body.offsetWidth;
else // handles non IE
height = window.innerHeight, width = window.innerWidth;
FeaturedItem.style.left = Math.max(500, parseInt((width - 1023)/2) + 500);
if () {
FeaturedItem.style.visibility = "visible";
}
}

[epots9]

function alignFI() {
var height, width;
if (document.all)
height = document.body.offsetHeight, width = document.body.offsetWidth;
else // handles non IE
height = window.innerHeight, width = window.innerWidth;
FeaturedItem.style.left = Math.max(500, parseInt((width - 1023)/2) + 500);
if () {
FeaturedItem.style.visibility = "visible";
}
}

what is the error message(s) u get when u run that? cuz i'm thinking that empty if statement could cause some trouble

[upirate]

syntax error
Line 23

[epots9]

syntax error
Line 23

if line 23 is: if () {

if it is, u have to put a condition inside the brakets, that will give a result of true or false.