function replaceBrowserLinks(FxLinkId, OpLinkId) {
	if(!document.getElementById) {
		return
	}
	var linkNode;
	var newLink=document.createElement('a');
	var newImg=document.createElement('img');
	var change=0;
	if (0 <= navigator.userAgent.indexOf('Opera')) {
		change=2;
		newLink.setAttribute('href','http://my.opera.com');
		newImg.setAttribute('alt','My Opera Community');
		newImg.setAttribute('title','Join the My Opera Community');
		newImg.setAttribute('src','http://promote.opera.com/buttons/myopera-2.gif');
	} else if ( 0 <= navigator.userAgent.indexOf('Firefox/0') || 
		0 <= navigator.userAgent.indexOf('Firefox/1.0') ) {
		change=1;
		newLink.setAttribute('href','http://www.spreadfirefox.com/?q=affiliates&id=880&t=194');
		newImg.setAttribute('alt','Upgrade to Firefox 1.5!');
		newImg.setAttribute('title','Upgrade to Firefox 1.5!');
		newImg.setAttribute('src','http://sfx-images.mozilla.org/affiliates/products/firefox/upgrade_1_5_125x125b.jpg');
	} else if (0 <= navigator.userAgent.indexOf('Firefox')) {
		change=1;
		newLink.setAttribute('href','http://www.spreadfirefox.com/?q=user/register&r=880');
		newImg.setAttribute('alt','Spread Firefox!');
		newImg.setAttribute('title','Spread Firefox!');
		newImg.setAttribute('src','../images/SFxButton88x31.png');
	}
	if(change) {
		if (change == 1) {
			linkNode = document.getElementById(FxLinkId);
		}
		if (change == 2) {
			linkNode = document.getElementById(OpLinkId);
		}
		if (linkNode) {
			newLink.appendChild(newImg);
			newImg.setAttribute('border','0');
			newImg.setAttribute('class','button');
			var parentNode=linkNode.parentNode;
			parentNode.replaceChild(newLink,linkNode);
		}
	}
}