/*
	Rex Limited, 29 October 2003
	Javascript for rollover menus
*/

	/* global variables */
	var openNavId = null;							// remembers which subNavId is open
	var menuTimer = 0;								// used to timeout the time delayed close event
	var mouseOffset = 25;							// the amount away from the mouse the popup will appear (x for top navigations, y for left navigation)
	
	/* style class names */
	style_topNavBack		= "topNavBack"			// used on top level nav object 
	style_topNavBack_over	= "topNavBack_over";
	
	
	/* navigation mouse events */

	function subNavOut() {
		menuTimer=setTimeout("closeNavs()",1000);
	}


	/* div container actions */	
	
	function showSubNav(thisDivId){
		clearTimeout(menuTimer);				// stop the timer that is going to close the navigation device
		if (openNavId != thisDivId) {
			closeNavs();
			
			document.getElementById(thisDivId).style.visibility = "visible";
			
			openNavId = thisDivId;
		}
	}
	
	function closeNavs() {				
		if (openNavId != null) {
			document.getElementById(openNavId).style.visibility = "hidden";
			openNavId = null;
		} 
	}