function display(liv) {
	var liv_act = eval("document.getElementById('liv"+liv+"')");

	// hide all layers
	for(var x=1;x<7;x++) {
		liv_all = eval("document.getElementById('liv"+x+"')");
		liv_all.style.display = 'none';
	}
	
	// show specific layer
	liv_act.style.display = 'block';
}

function areademo() {
	windemo = window.open('etcommy_demo.php','','width=800px,height=590px,resizeable=no,toolbar=no,statusbar=no');
	windemo.focus();
}