function SDMenu(id) {
	
	this.menu = document.getElementById(id);
	this.markCurrent = true;
	if (this.markCurrent) {
		var links = this.menu.getElementsByTagName("a");
		for (var i = 0; i < links.length; i++)
			
			if (links[i].href == document.location.href) {
				
				links[i].className = "btnCurrent";
				
			}
	}
		
}