passing var in onclick causes it to fail?

Hello. I’m trying to pass a var to a function using onclick, but when I run it, it plays the function onload, and does not work when I click the link. I’m used to AS3 where you can’t do this, so is javascript the same? If that’s the case, how can I get the object to the onclick function for later use?

This is my handler

[CODE]navLink.onclick = navClick(oSection);[/CODE]

And the function

[CODE]function navClick(S) {
alert(S);
return false;

}[/CODE]

and in context

[CODE]window.onload = initSite;

function initSite() {
var clientsDoc = Sarissa.getDomDocument(“”,””);
clientsDoc.async = false;
clientsDoc.load(“xml/client_data.xml”);

var navItemList = clientsDoc.getElementsByTagName(“navItem”);
//make main nav
for(i=0; i<navItemList.length; i++) {
var navLink = document.getElementById(“nav_”+(i+1));
//build XML object
var oSection = new Object();
oSection.linkName = navItemList[i].getAttribute(“name”);
var linkText = document.createTextNode(oSection.linkName);
navLink.appendChild(linkText);
navLink.onmouseover = navOver;
navLink.onmouseout = navOut;
navLink.onclick = navClick(oSection);
}
var links = document.getElementById(“nav_”+(i+1));
}

function navOver() {
this.parentNode.className = “active-link”;

}

function navOut() {
this.parentNode.className = “inactive-link”;
}

function navClick(S) {
alert(“”);
return false;

}[/CODE]

Thanks for any help you can offer.

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