function resetMainVars(tut,molecule,structNo)  {
	parent.cscurrent = tut;
	parent.csmol[1] = molecule;
	parent.csresetMol[1] = molecule;
	parent.csstructNo = structNo;
	parent.csresetStructNo = structNo;
	parent.cspushed = "movie00";
	parent.cskey = "element";
	parent.rightAnswer = true;
	parent.quizAnswered = false;
}

function setCookie(value)  {
	var today = new Date();
	var expire = new Date();
	expire.setTime(today.getTime() + 1000*60*60*24*365);
	document.cookie ="csvars=" + escape(value) + ((expire == null) ? "" : ("; expires=" + expire.toGMTString()));
}

function loadCookie() {
	var search = "csvars=";
	var content;
	var temp;
	if (document.cookie.length > 0)  {
		offset = document.cookie.indexOf(search);
		if (offset != -1)  { 
			offset += search.length;
			// set index of beginning of value
			end = document.cookie.indexOf(";",offset);
			// set index of end of cookie value
			if (end == -1) end = document.cookie.length;
			//alert(unescape(document.cookie.substring(offset,end)));
			content = unescape(document.cookie.substring(offset,end));
		}
		else  {
			setCookie("normal!student!passive!true!slow!element!none!1atom.pdb!1atom.pdb!1!movie00!1");
			content = "normal!student!passive!true!slow!element!none!1atom.pdb!1atom.pdb!1!movie00!1";
			sliceCookie(content);
			//location.reload();
		}
	}
	else  {
		setCookie("normal!student!passive!true!slow!element!none!1atom.pdb!1atom.pdb!1!movie00!1");
		content = "normal!student!passive!true!slow!element!none!1atom.pdb!1atom.pdb!1!movie00!1";
		sliceCookie(content);
		//location.reload();
	}
	sliceCookie(content);
	return temp;
}

function showCookie() {
	var search = "csvars=";
	var content;
	if (document.cookie.length > 0)  {
		offset = document.cookie.indexOf(search);
		if (offset != -1)  { 
			offset += search.length;
			// set index of beginning of value
			end = document.cookie.indexOf(";",offset);
			// set index of end of cookie value
			if (end == -1) end = document.cookie.length;
			content = unescape(document.cookie.substring(offset,end));
		}
		alert(unescape(document.cookie.substring(offset,end)));
	}
	else alert("Cookies are not enabled!");
}

function resetCookie()  {
	var content = "normal!student!passive!true!slow!element!none!1atom.pdb!1atom.pdb!1!movie00!1";
	if (confirm("You are resetting your cookie to "+content+". Accept this reset?"))  {
		setCookie(content);
		sliceCookie(content);
	}
}

function sliceCookie(content)  {
	var quizReset = false;
	var cookieList = new Array();
	cookieList = content.split("!");
	//for (var i=0;i<cookieList.length;i++)  {alert(cookieList[i]);}
	parent.csfontsize = cookieList[0];
	parent.csformat = cookieList[1];
	if (cookieList[2] != "passive")  {
		parent.csquiz = "passive";
		quizReset = true;
	}
	else parent.csquiz = cookieList[2];
	parent.csnomenus = cookieList[3];
	parent.csaccess = cookieList[4];
	parent.cskey = cookieList[5];
	parent.cscurrent = cookieList[6];
	parent.csmol[1] = cookieList[7];
	parent.csresetMol[1] = cookieList[8];
	parent.csstructNo = cookieList[9];
	parent.cspushed = cookieList[10];
	parent.csresetStructNo = cookieList[11];
	if (quizReset) saveToCookie();
	//else alert("csquiz is already set to " + cookieList[2] + ". Your cookie will not be affected.");
}

function saveToCookie()  {
	var content = parent.csfontsize+"!"+parent.csformat+"!"+parent.csquiz+"!"+parent.csnomenus+"!"+parent.csaccess+"!"+parent.cskey+"!"+parent.cscurrent+"!"+parent.csmol[1]+
		"!"+parent.csresetMol[1]+"!"+parent.csstructNo+"!"+parent.cspushed+"!"+parent.csresetStructNo;
	//if (confirm(content+" will be your new cookie. Save it?")) 
	setCookie(content);
}

function checkRequired()  {
	var check_platform = false;
	var check_browser = false;
	var check_browserVersion = false;
	var check_plugin = false;
	var check_pluginVersion = false;
	var check_java = false;
	var check_cookies = false;
	if (navigator.platform.slice(0,3) == "Mac" || navigator.platform.slice(0,3) == "Win")
		check_platform = true;
	if (navigator.appName == "Netscape") 
		check_browser = true;
	if (navigator.appVersion.slice(0,3) == "4.5" || navigator.appVersion.slice(0,3) == "4.6" || navigator.appVersion.slice(0,3) == "4.7" || navigator.appVersion.slice(0,4) == "4.08")
		check_browserVersion = true;
	for (var i=0;i<navigator.plugins.length;i++)  {
		var pi = navigator.plugins[i].name.split(" ");
		if (pi[1] == "Chime")  {
			check_plugin = true;
			if (pi[2].slice(0,1) == "2") check_pluginVersion = true;
		}
	}
	if (navigator.javaEnabled()) check_java = true;
	var today = new Date();
	var expire = new Date();
	expire.setTime(today.getTime() + 1000*60*60*24*365);
	document.cookie ="l3d=" + escape("1") + ((expire == null) ? "" : ("; expires=" + expire.toGMTString()));
	if (document.cookie.length > 0) check_cookies = true; 
	if (check_platform && check_browser && check_browserVersion && check_plugin && check_pluginVersion && check_java && check_cookies) return true;
	else  return false;
}

function checkSystem()  {
	if (checkRequired())  {
		status_win = window.open('statusok.html','status_winC','width=300,height=300,screenX=10,screenY=10,scrollbars=1,menubar=0,toolbar=0,status=1,resizable=0');
	}
	else  {
		status_win = window.open('statusno.html','status_winC','width=300,height=300,screenX=10,screenY=10,scrollbars=1,menubar=0,toolbar=0,status=1,resizable=0');
	}
}

function loadTut(tut)  {
	var docu = tut + "/fs_" + tut + ".html";
	var baseWidth = 640;
	if (screen.width<720) baseWidth = 640;
		else if (screen.width<912) baseWidth = 800;
			else baseWidth = 1024;
	if (parent.debugging)  {
		switch (baseWidth)  {
			case 640 : tut_win = window.open(docu,'tut_winC','width=610,height=415,screenX=1,screenY=1,scrollbars=1,menubar=1,toolbar=0,status=1,resizable=1');break;
			case 800 : tut_win = window.open(docu,'tut_winC','width=760,height=525,screenX=1,screenY=1,scrollbars=1,menubar=1,toolbar=0,status=1,resizable=1');break;
			case 1024 : tut_win = window.open(docu,'tut_winC','width=990,height=690,screenX=1,screenY=1,scrollbars=1,menubar=1,toolbar=0,status=1,resizable=1');break;
			default : 	tut_win = window.open(docu,'tut_winC','width=610,height=415,screenX=1,screenY=1,scrollbars=1,menubar=1,toolbar=0,status=1,resizable=1');
		}
	}
	else  {
		switch (baseWidth)  {
			case 640 : tut_win = window.open(docu,'tut_winC','width=610,height=415,screenX=1,screenY=1,scrollbars=1,menubar=0,toolbar=0,status=0,resizable=0');break;
			case 800 : tut_win = window.open(docu,'tut_winC','width=760,height=540,screenX=1,screenY=1,scrollbars=1,menubar=0,toolbar=0,status=0,resizable=0');break;
			case 1024 : tut_win = window.open(docu,'tut_winC','width=990,height=705,screenX=1,screenY=1,scrollbars=1,menubar=0,toolbar=0,status=0,resizable=0');break;
			default : 	tut_win = window.open(docu,'tut_winC','width=610,height=415,screenX=1,screenY=1,scrollbars=1,menubar=0,toolbar=0,status=0,resizable=0');
		}
	}
}

function openTutorial(tut,structNo,mol1,mol2)	{
	if (checkRequired())  {
		if (parent.tutOpen) tut_win.focus();
		else  {
			resetMainVars(tut,mol1,structNo);
			loadTut(tut);
		}
	}
	else status_win = window.open('statusno.html','status_winC','width=300,height=300,screenX=10,screenY=10,scrollbars=1,menubar=0,toolbar=0,status=1,resizable=0');
}

function openHelp(helpPage)  {
	var source;
	source = "help/" + helpPage + ".html";
	//source = "help/outoforder.html";
	//if (parent.f_title.helpOpen) help_win.focus();
	//else  {
		var baseWidth = 640;
		if (screen.width<720) baseWidth = 640;
			else if (screen.width<912) baseWidth = 800;
				else baseWidth = 1024;
		switch (baseWidth)  {
			case 640 : help_win = window.open(source,'help_winC','width=375,height=360,screenX=125,screenY=10,dependent=0,scrollbars=1,menubar=1,location=0,toolbar=0,status=1,resizable=0');break;
			case 800 : help_win = window.open(source,'help_winC','width=440,height=400,screenX=140,screenY=20,dependent=0,scrollbars=1,menubar=1,location=0,toolbar=0,status=1,resizable=0');break;
			case 1024 : help_win = window.open(source,'help_winC','width=500,height=455,screenX=235,screenY=60,dependent=0,scrollbars=1,menubar=1,location=0,toolbar=0,status=1,resizable=0');break;
			default : 	help_win = window.open(source,'help_winC','width=375,height=360,screenX=125,screenY=10,dependent=0,scrollbars=1,menubar=1,location=0,toolbar=0,status=1,resizable=0');
		}
	//}
	help_win.focus();
}


//**********************************************************
//
//  File 'fcns_index.js' written by Timothy Driscoll.
//
//  Latest revision October 29,1999 to accompany The Biochemistry 3D Tutorials.
//
//**********************************************************