sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);

function popup(url, winname, width, height) {
	window.open(url, winname, 'toolbar=no,width=' + width + ',height=' + height +
					',status=yes,scrollbars=yes,resizable=yes,menubar=no');
}

function getRequestParameter(paramName) {
	var url = location.href;
	
	var begin = url.indexOf(paramName + "=");
	if (begin == -1)
		return null;
	begin = begin + (paramName.length + 1);
	
	var end = url.indexOf("&", begin);
	if (end == -1)
		end = url.length;
	
	return unescape(url.substring(begin, end));
}

function populateField(fieldId, fieldValue) {
	fieldObj = document.getElementById(fieldId);
	if (fieldValue != null)
		fieldObj.value = fieldValue;
}