function initNavi() {

	var naviTriggers = new Array();
	var trigger;
	
	naviTriggers[0] = 'subnav01';
	naviTriggers[1] = 'subnav02';
	naviTriggers[2] = 'subnav03';
	naviTriggers[3] = 'subnav04';
	naviTriggers[4] = 'subnav05';

	for (var i = 0; i < naviTriggers.length; i++) {
		var element = naviTriggers[i];
		trigger = document.getElementById(element);
		trigger.onmouseover = openNavi;
		trigger.onmouseout = closeNavi;
 	}

}
function triggerNavi(event) {

	var child = this.childNodes[2];

	if (child.tagName == 'UL') {

		if (child.style.display == "block") {
			child.style.display = "none";
		} else {
			child.style.display = "block";
		}

	}

}

function openNavi(event) {
	
	var child = this.childNodes[2];
	
	if (child.tagName == 'UL') {
		child.style.display = "block";
	} 
	
}

function closeNavi(event) {

	var child = this.childNodes[2];

	if (child.tagName == 'UL') {
		child.style.display = "none";
	}

}