function getCookie( name ) {
	var start = document.cookie.indexOf( name + "=" );
	var len = start + name.length + 1;
	if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) ) {
		return null;
	}
	if ( start == -1 ) return null;
	var end = document.cookie.indexOf( ';', len );
	if ( end == -1 ) end = document.cookie.length;
	return unescape( document.cookie.substring( len, end ) );
}


function checkCookie(name){
	var dcookie = getCookie( name );
	if (!dcookie) {
		setCookie( 'drtooth.hu', 'drtooth.hu-lastvisit', '', '/', '', '' );
		show_centerIntro ();
	} else {
		setCookie( 'drtooth.hu', 'drtooth.hu-lastvisit', '', '/', '', '' );
	}
}


function setCookie( name, value, expires, path, domain, secure ) {
	var today = new Date();
	today.setTime( today.getTime() );
	
	if ( !expires ) {
		expires = (expires+7) * 1000 * 60 * 60 * 24;
	}
	var expires_date = new Date( today.getTime() + (expires) );
	document.cookie = name+'='+escape( value ) +
		( ( expires ) ? ';expires='+expires_date.toGMTString() : '' ) + //expires.toGMTString()
		( ( path ) ? ';path=' + path : '' ) +
		( ( domain ) ? ';domain=' + domain : '' ) +
		( ( secure ) ? ';secure' : '' );
}

function show_centerIntro () {
		d=document.getElementById('centervideocontent');
		v=document.getElementById('videoframe');
			if (d && v) {
				document.getElementById('centervideocontent').style.display="block";
				document.getElementById('videoframe').style.display="block";
				var videoframe = document.getElementById("videoframe");
				var vsrc = videoframe.src; 
				videoframe.src = "indexintro.html";
			} else {
				hide_Testimonials ()
			}
}

function show_centerIntroagain () {
		document.getElementById('centervideocontent').style.display="block";
		document.getElementById('videoframe').style.display="block";
		var videoframe = document.getElementById("videoframe");
		var vsrc = videoframe.src; 
		videoframe.src = "intro.html";
}

function show_centerVideo () {
		document.getElementById('centervideocontent').style.display="block";
		document.getElementById('videoframe').style.display="block";
		var videoframe = document.getElementById("videoframe");
		var vsrc = videoframe.src; 
		videoframe.src = "welcome.html";
}

function hide_centerVideo () {
		var videoframe = document.getElementById("videoframe");
		var vsrc = videoframe.src; 
		videoframe.src = "null.html";
		document.getElementById('centervideocontent').style.display="none";
}

function skip_centerIntro () {
		var videoframe = document.getElementById("videoframe");
		var vsrc = videoframe.src; 
		videoframe.src = "welcome.html";
}

function show_Testimonials () {
		document.getElementById('testimonialvideocontent').style.display="block";
		document.getElementById('videoframe').style.display="block";
		var videoframe = document.getElementById("videoframe");
		var vsrc = videoframe.src;
		videoframe.src = "testimonialvideo.html";
}

function hide_Testimonials () {
	d=document.getElementById('testimonialvideocontent');
	v=document.getElementById('videoframe');
	if (d && v) {
		var videoframe = document.getElementById("videoframe");
		var vsrc = videoframe.src; 
		videoframe.src = "null.html";
		document.getElementById('testimonialvideocontent').style.display="none";
	} else {
		return false;
	}
}