// link outline fix
function explorerFix(){
	for (a in document.links) document.links[a].onfocus = document.links[a].blur;
}
if (document.getElementById){
	document.onmousedown = explorerFix;
}

// show and hide videos
var lastOpen = 'v0';
function showVideo(obj){
	if (lastOpen) {
		document.getElementById(lastOpen).style.display = "none";
		lastOpen = '';
	}
	if (obj != lastOpen) {
		document.getElementById(obj).style.display = "block";
		lastOpen = obj;
	}
}