function startMenu(){
	
	elso_id = 'menu_1';
	utolso_id = 'menu_6';
	
	navRoot =  document.getElementById('menu');
	for( i = 0; i < navRoot.childNodes.length; i++ ){
		node = navRoot.childNodes[i];
		if ( node.nodeName == "LI" ){			
			
			if(node.className == 'active' || (node.id==utolso_id && node.className == 'no_border active')){
				if( node.id != elso_id ){
					prevnode = (node.previousSibling.nodeName == 'LI') ? node.previousSibling : node.previousSibling.previousSibling;
					prevnode.className = 'no_border';
				}
			}
			
			node.onmousedown = function(){
			
				for( j = 0; j < navRoot.childNodes.length; j++ ){
					node2 = navRoot.childNodes[j];
					node2.className = '';
					if ( node2.nodeName == "LI" ){
						this.className = 'active';
						if ( this.id != elso_id ){
							prev = (this.previousSibling.nodeName == 'LI') ? this.previousSibling : this.previousSibling.previousSibling;
							prev.className = 'no_border';
						}
						if( (node2.id == utolso_id) && node2.className!= 'active' ){
							node2.className = 'no_border';
						}
						
					} // end_IF
				} // end_FOR
			
			} // end_ONMOUSEDOWN
		}
	}
}

window.onload = startMenu;