// array of past polls; contains (in 2nd dimension):
// 0 = poll id
// 1 = question
// 2 = total number of votes
// 3 = string w/ start-end date period
// 4 = answer array; contains:
	// the answers array contains an array for each possible answer to the poll. 
	// the indexes of the 2nd dim. arrays correspond to the following values:
	//		0 = the answer itself
	//		1 = the number of votes for that answer
	//		2 = the percentage of all votes that this comprises
	//		3 = the id of the answer, in the database
var polls = new Array();

polls[0] = new Array( 470, "Is the American Century ending?", 35, 'Nov 5th 2008 - Dec 5th 2008', "single-choice", new Array( 
	
	new Array( "Yes", 23, '65.7%', 1977 ),
	
	new Array( "No", 11, '31.4%', 1978 )
	
	));

polls[1] = new Array( 443, "Should biofuels and the renewables be critical components of U.S. energy policy?", 92, 'Apr 2nd 2008 - Apr 30th 2008', "single-choice", new Array( 
	
	new Array( "Yes", 65, '70.7%', 1848 ),
	
	new Array( "No", 27, '29.3%', 1849 )
	
	));

polls[2] = new Array( 413, "Can stricter law enforcement at the border and the workplace solve the U.S. immigration problem?", 61, 'Nov 7th 2007 - Dec 7th 2007', "single-choice", new Array( 
	
	new Array( "Yes", 32, '52.5%', 1697 ),
	
	new Array( "No", 29, '47.5%', 1698 )
	
	));

polls[3] = new Array( 353, "Does Affirmative Action in higher education really benefit minorities?", 95, 'Apr 4th 2007 - May 16th 2007', "single-choice", new Array( 
	
	new Array( "Yes", 45, '47.4%', 1427 ),
	
	new Array( "No", 49, '51.6%', 1428 )
	
	));

polls[4] = new Array( 294, "Should the U.S. "Stay the Course" for victory in Iraq?", 134, 'Nov 1st 2006 - Dec 1st 2006', "single-choice", new Array( 
	
	new Array( "Yes", 52, '38.8%', 1150 ),
	
	new Array( "No", 81, '60.4%', 1151 )
	
	));

polls[5] = new Array( 251, "Should the U.S. promote democracy in the Islamic world?", 253, 'Apr 4th 2006 - May 10th 2006', "single-choice", new Array( 
	
	new Array( "Yes", 186, '73.5%', 966 ),
	
	new Array( "No", 64, '25.3%', 967 )
	
	));

polls[6] = new Array( 208, "Should public schools teach Intelligent Design along with Evolution?", 532, 'Nov 2nd 2005 - Dec 1st 2005', "single-choice", new Array( 
	
	new Array( "Yes", 150, '28.2%', 766 ),
	
	new Array( "No", 381, '71.6%', 767 )
	
	));


var site = 'http://www.bu.edu/com/';
var no_cookies_msg = 'Sorry, you must have cookies enabled to view this page.'; //';
var selected_pid;


// check site
if (window.location.href.indexOf(site) == -1) {
	document.writeln( '<h3>Error</h3><p>This page is not authorized to show past polls for this account.</p>' );	
}

// check cookies
if (cookietest()) {
	selected_pid = getCookie('QP-pid');
	delCookie('QP-pid');
}
else {
	document.writeln( '<p>'+no_cookies_msg+'</p>' );
}

document.writeln( '<table class="QP-past-polls" width=100%>' );

// if there is a selected poll, show it
if (selected_pid != null) {
	var selected;

	// find the poll in the array
	for (var i = 0; i < polls.length; i++) {
		if (polls[i][0] == selected_pid) {
			selected = i;
			break;
		}
	}

	var question = polls[selected][1];
	var vote_count = polls[selected][2];
	var dates = polls[selected][3];
	var poll_type = polls[selected][4];	
	var answers = polls[selected][5]; // array

	var multi_choice_msg = "Bar graphs show percent of "+vote_count+" multiple-choice responses";
	
	document.writeln( '<tr><td class="QP-question">'+question+'</td></tr>' );
	document.writeln( '<tr><td class="QP-dates">This poll ran '+dates+'<span class="QP-dates-tally">. '+vote_count+' votes were collected.</span></td></tr>' );
	document.writeln( '<tr><td><style><!-- #QP-answers-text-cell SPAN.QP-answer-slash { display: none; } #QP-answers-text-cell SPAN.QP-answer-pct { display: none; } --></style><table cellspacing=0 cellpadding=0 class="QP-answers">' );

	// show each answer, as on regular polls page
	for (var j = 0; j < answers.length; j++) {
		var answer_text = answers[j][0];
		var answer_votes = answers[j][1];
		var answer_pct = answers[j][2];
		var answer_id = answers[j][3];
		document.writeln( '<tr><td id="QP-answers-text-cell" class="QP-answers-text-cell">'+answer_text+' - <span class="QP-answer-count" id="QP-answer-count">'+answer_votes+' vote'+(answer_votes==1?'':'s')+' </span><span class="QP-answer-slash" id="QP-answer-slash"> / </span><span id="QP-answer-pct"class="QP-answer-pct"> '+answer_pct+'</span></td></tr>' );
		document.writeln( '<tr><td><table class="QP-bar-table" border=0 width="'+answer_pct+'" id="QP-answer-'+(j+1)+'" cellspacing=0 cellpadding=0><tr class="QP-bar-row"><td class="QP-bar-cell">&nbsp;</td></tr></table></td></tr>' );

		if (j < answers.length - 1) {
			document.writeln( '<tr><td style="font-size: .5em;">&nbsp</td></tr>' );
		}
	}

	if (poll_type == 'multiple-choice') {
		document.writeln( '<tr><td class="QP-submit-area"><em>'+multi_choice_msg+'</em></td></tr></table></td></tr>');
	} else {
		document.writeln( '<tr><td style="font-size: 10px;">&nbsp;</td></tr></table></td></tr>' );
	}
}

document.writeln( '<tr><td><br><table class="QP-poll-list" width=100%>' );

// show list of polls
for (var i = 0; i < polls.length; i++) {
	var pid = polls[i][0];
	var question = polls[i][1];
	var dates = polls[i][3];

	document.writeln( '<tr><td class="QP-poll-list"><a href="javascript:select_poll('+pid+');">'+question+'&nbsp('+dates+')</a></td></tr>' );
}

document.writeln( '</table></td></tr></table>' );


// functions 

// cookie get and set functions, from http://www.echoecho.com/jscookies02.htm
function getCookie(NameOfCookie) { 
	if (document.cookie.length > 0) { 
		begin = document.cookie.indexOf(NameOfCookie+"=");
		if (begin != -1) { 
			begin += NameOfCookie.length+1;
			end = document.cookie.indexOf(";", begin);
			if (end == -1) 
				end = document.cookie.length;
			return unescape(document.cookie.substring(begin, end)); 
		}
	}
	return null;
}

function setCookie(NameOfCookie, value, expiredays, poll_type_handle) { 
	var ExpireDate = new Date ();
	ExpireDate.setTime(ExpireDate.getTime() + (expiredays * 24 * 3600 * 1000));
	document.cookie = NameOfCookie + "=" + escape(value) + 
		((expiredays == null) ? "" : "; expires=" + ExpireDate.toGMTString());
}

function delCookie (NameOfCookie) { 
	if (getCookie(NameOfCookie)) {
		document.cookie = NameOfCookie + "=" + "; expires=Thu, 01-Jan-70 00:00:01 GMT";
	}
}

// cookietest: tests if cookies are enabled
function cookietest() {
	setCookie('QP_test', 'true', .25);

	if (getCookie('QP_test') == 'true') {
		delCookie('QP_test');
		return true;
	}
	else return false;
}

// select poll: set pid cookie and reload page
function select_poll( pid ) {
	setCookie( 'QP-pid', pid, '.04167' ); // set pid cookie; approx. 1 hour expiry
	window.location.reload(true);
}