// JavaScript Document
function toggleLayer(whichLayer) {
	if (document.getElementById) {
		// this is the way the standards work
		var style2 = document.getElementById(whichLayer).style;
		if (style2.display == "none") {
			style2.display = "";
		} else {
			style2.display = "none";	
		}
	} else if (document.all) {
		// this is the way old msie versions work
		var style2 = document.all[whichLayer].style;
		if (style2.display == "none") {
			style2.display = "";
		} else {
			style2.display = "none";	
		}
	} else if (document.layers) {
		// this is the way nn4 works
		var style2 = document.layers[whichLayer].style;
		if (style2.display == "none") {
			style2.display = "";
		} else {
			style2.display = "none";	
		}
	}
}

function toggleLayerTo(whichLayer, to) {
	if (document.getElementById) {
		// this is the way the standards work
		var style2 = document.getElementById(whichLayer).style;
		style2.display = to;
	} else if (document.all) {
		// this is the way old msie versions work
		var style2 = document.all[whichLayer].style;
		style2.display = to;
	} else if (document.layers) {
		// this is the way nn4 works
		var style2 = document.layers[whichLayer].style;
		style2.display = to;
	}
}

function airline(selectlist,whichLayer) {
	var selectedwhich = selectlist.options[selectlist.selectedIndex].value;
	if (selectedwhich == "Yes") {
		toggleLayer(whichLayer,"block");
	} else if (selectedwhich == "No") {
		toggleLayer(whichLayer,"none");
	}
}// JavaScript Document