I've commented out the browser detection so that i can read the errors in FF
function rephr() {
	//if(navigator.appVersion.indexOf('MSIE')>0) {
	var hrs = document.getElementsByTagName('HR');
		for(var i = 0; i < hrs.length; i++) {
			var newdiv = document.createElement('div');
			newdiv.className = "hr_replace";
			creatediv = appendChild(newdiv);
			hrs[i].parentNode.replaceChild(creatediv, hrs[i]); 
		
		}
	//}
}