function centerObject() {
	var links = document.getElementsByTagName("a");
	for (var i = 0; i < links.length; i++)
	{
		if (links[i].className == "search-btn")
		{
			links[i].style.marginLeft = (links[i].parentNode.offsetWidth-links[i].offsetWidth)/2 + "px";
		}
	}
}
	
if (window.addEventListener)
	window.addEventListener("load", centerObject, false);
else if (window.attachEvent)
	window.attachEvent("onload", centerObject);