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window.onerror = null;
var maxID = 0

function itemHide(id) {
	var thisLevel = document.getElementById( 'item'+id );
	thisLevel.style.display = "none";
}
function itemShow(id) {
	var thisLevel = document.getElementById( 'item'+id );
 	thisLevel.style.display = "block";
}
function itemToggle(id) {
	var thisLevel = document.getElementById( 'item'+id );
	if ( thisLevel.style.display == "none") itemShow(id);
	else 					itemHide(id);
}
function itemHideAll()   { for (var id=1; id<=maxID; id++) { itemHide(id); } }
function itemShowAll()   { for (var id=1; id<=maxID; id++) { itemShow(id); } }
function itemSetMaxID(x) { maxID = x; }


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function setCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function getCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0; i < ca.length; i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function deleteCookie(name) { setCookie(name,"",-1); }

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