function runOnLoad(f) {
    if (runOnLoad.loaded) f();    
    else runOnLoad.funcs.push(f); 
}

runOnLoad.funcs = [];
runOnLoad.loaded = false; 

runOnLoad.run = function() {
    if (runOnLoad.loaded) return;    for(var i = 0; i < runOnLoad.funcs.length; i++) {
        try { runOnLoad.funcs[i](); }
        catch(e) { /* An exception in one function shouldn't stop the rest */ }
    }
    
    runOnLoad.loaded = true; // Remember that we've already run once.
    delete runOnLoad.funcs;  // But don't remember the functions themselves.
    delete runOnLoad.run;    // And forget about this function too!
};

// Register runOnLoad.run() as the onload event handler for the window
if (window.addEventListener)
    window.addEventListener("load", runOnLoad.run, false);
else if (window.attachEvent) window.attachEvent("onload", runOnLoad.run);
else window.onload = runOnLoad.run;