var videoisdown = false;
var videofirstrun = true;

function videotoggle () {
	if(videoisdown){
		if(document.getElementById('videoshow')){
			document.getElementById('videoshow').style.backgroundImage = 'url(../art/p_vidclosed.gif)';
		}
		$('#videospace').slideUp("fast", function () { document.getElementById('videospace').style.display = 'none'; });
		videoisdown = false;
	} else {
		if(videofirstrun){
			var varcheck = new Array();
			if(typeof(currentchapter) != 'undefined'){
				varcheck.current = currentchapter;
			}
			if(document.getElementById('videospace')){
				document.getElementById('videospace').innerHTML = '<div id="videospaceflash"></div>';
				_papobject.embedSWF('../view/viewer.swf','videospaceflash','100%','125','9.0.0',null,varcheck,{menu: "false",wmode: "transparent"});
			}
		}
		if(document.getElementById('videoshow')){
			document.getElementById('videoshow').style.backgroundImage = 'url(../art/p_vidopen.gif)';
		}
		$('#videospace').slideDown("fast");
		videoisdown = true;
	}
}

function videoover () {
	if(!videoisdown){
		document.getElementById('videoshow').style.backgroundImage = 'url(../art/p_vidclosed_a.gif)';
	} else {
		document.getElementById('videoshow').style.backgroundImage = 'url(../art/p_vidopen_a.gif)';
	}	
}

function videoout () {
	if(!videoisdown){
		document.getElementById('videoshow').style.backgroundImage = 'url(../art/p_vidclosed.gif)';
	} else {
		document.getElementById('videoshow').style.backgroundImage = 'url(../art/p_vidopen.gif)';
	}	
}


window.onload = function () {
	if(document.getElementById('videoshow')){
		document.getElementById('videoshow').style.display = 'block';
		document.getElementById('videoshow').style.backgroundImage = 'url(../art/p_vidclosed.gif)';		
		document.getElementById('videoshow').onclick = videotoggle;
		document.getElementById('videoshow').onmouseover = videoover;
		document.getElementById('videoshow').onmouseout = videoout;
	}
	if(typeof(currentchapter) != 'undefined' || (document.referrer && document.referrer != '' && document.referrer.indexOf('pbs.org') == -1)){
		videotoggle();
	}
}

function makenextlink () {
	if(currentchapter < 10){
		if(document.getElementById('charea')){
			document.getElementById('charea').innerHTML = '';
			$('#charea').hide();
		}
		if(document.getElementById('nextthing')){
			document.getElementById('nextthing').innerHTML = '<a href="' + (currentchapter + 1) + '.html"><img src="../art/vidnext.gif" width="150" height="150" alt="" /><br /><span class="nextchapter">NEXT CHAPTER</span> ' + nextchtitle + '</a>';
			$('#nextthing').fadeIn(300);
		}
	}
}