/*



*/

var menuState = false;
var preloadFlag = true;

function newImage(arg) {
        if (document.images) {
                rslt = new Image();
                rslt.src = arg;
                return rslt;
        }
}

function changeImages() {
        if (document.images && (preloadFlag == true)) {
                for (var i=0; i<changeImages.arguments.length; i+=2) {
                        document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
                }
        }
}

function hidemenu(whichLayer) {
	if (document.getElementById) {
		// this is the way the standards work
		document.getElementById(whichLayer).style.visibility = "hidden";
	}
	else if (document.all) {
		// this is the way old msie versions work
		document.all[whichlayer].style.visibility = "hidden";
	}
	else if (document.layers) {
		// this is the way nn4 works
		document.layers[whichLayer].visibility = "hidden";
	}
} 

function showmenu(whichLayer) {
	if (document.getElementById) {
		// this is the way the standards work
		document.getElementById(whichLayer).style.visibility = "visible";
	}
	else if (document.all) {
		// this is the way old msie versions work
		document.all[whichlayer].style.visibility = "visible";
	}
	else if (document.layers) {
		// this is the way nn4 works
		document.layers[whichLayer].visibility = "visible";
	}
}

function togglemenu(layer) {
	if(menuState) {
		// Close layer
		hidemenu(layer);
		menuState = false;
	}
	else {
		// Open layer
		showmenu(layer);
		menuState = true;
	}
}