var layerRef= "";
var styleSwitch = "";

function init( dType ) {
	if ( navigator.appName == "Netscape" ) {
		layerRef = "document.layers";
		styleSwitch = "";
	} else {
		layerRef = "document.all";
		styleSwitch = ".style";
	}
	//createMenuItems( dType );
}

function showLayer( layerName ) {
	eval ( layerRef + '["' + layerName + '"]' + styleSwitch + '.visibility = "visible"' );
}

function showPage() {
	if ( ( document.all["briefingSelection"].bSelection.selectedIndex - 1 ) >= 0 ) {
		document.location = "briefing.asp?Page=" + ( document.all["briefingSelection"].bSelection.selectedIndex - 1 );
	}
}

function showArchivePage() {
	document.location = "archive.asp?Page=" + ( document.all["archiveSelection"].bSelection.selectedIndex - 1 )
}

function setLinks( thePage ) {
	for ( var i=0; i<5; i++ ) {
		if ( i == thePage ) {
			document.all["pageLink" + i].onclick = null;
			document.all["pageLink" + i].onmouseover = null;
			document.all["pageLink" + i].onmouseout = null;
			document.all["pageLink" + i].style.color = "white";
			document.all["pageLink" + i].style.backgroundColor = "#9cb59c";
			document.all["pageLink" + i].style.cursor = "default";
		} else {
			document.all["pageLink" + i].onclick = new Function( "showPage( " + i + " );" );
			document.all["pageLink" + i].onmouseover = new Function( "changeColour( 3 );" );
			document.all["pageLink" + i].onmouseout = new Function( "changeColour( 2 );" );
			document.all["pageLink" + i].style.color = "darkGreen";
			document.all["pageLink" + i].style.backgroundColor = "#9cb59c";
			document.all["pageLink" + i].style.cursor = "hand";
		}
	}	
}

function initForumSubMenu( theMenu ) {
	for ( var i=0; i<4; i++ ) {
		if ( document.all["subMenu" + i] != null ) {
			if ( ( i == theMenu ) && !( ( i == 2 ) && ( document.all["subMenu" + i].innerText.indexOf( "Registration" ) > -1 ) ) ) {
				document.all["subMenu" + i].onclick = null;
				document.all["subMenu" + i].onmouseover = null;
				document.all["subMenu" + i].onmouseout = null;
				document.all["subMenu" + i].style.color = "white";
				document.all["subMenu" + i].style.backgroundColor = "#9cb59c";
				document.all["subMenu" + i].style.cursor = "default";
			} else {
				if ( ( i == 2 ) && ( document.all["subMenu" + i].innerText.indexOf( "Registration" ) > -1 ) ) {
					document.all["subMenu" + i].onclick = new Function( "showForumPage( 3 );" );
				} else {
					document.all["subMenu" + i].onclick = new Function( "showForumPage( " + i + " );" );
				}
				document.all["subMenu" + i].onmouseover = new Function( "changeColour( 3 );" );
				document.all["subMenu" + i].onmouseout = new Function( "changeColour( 2 );" );
				document.all["subMenu" + i].style.color = "darkGreen";
				document.all["subMenu" + i].style.backgroundColor = "#9cb59c";
				document.all["subMenu" + i].style.cursor = "hand";
			}
		}
	}
	if ( theMenu == 2 ) {
		initVotingTables();
	}	
}

function showForumPage( thePage ) {
	var pLoc = '';
	if ( thePage == 0 ) {
		pLoc = "contribute.asp";
	} else {
		if ( thePage == 1 ) {
			pLoc = "briefing.asp";
		} else {
			pLoc = "links.asp";
		}
	}
	document.location = pLoc;
}

//******************************************************************************************************
// MouseOver and MouseOut Methods
//******************************************************************************************************

var objColours = new Array();
objColours[0] = "red";
objColours[1] = "white";
objColours[2] = "darkGreen";
objColours[3] = "yellow";
objColours[4] = "purple";
objColours[5] = "#026564";

function changeColour( id ) {
	window.event.srcElement.style.color = objColours[id];
}


//******************************************************************************************************
// Methods for the Forum Voting Page
//******************************************************************************************************
var currentVotes = new Array();
for ( var i=0; i<5; i++ ) {
	currentVotes[i] = 5;
}

var voteOptions = 11;
var shadowVote = -1;

var blankGif = new Image();
var voteGif = new Image();
var shadowGif = new Image();

blankGif.src = "images/blank.gif";
voteGif.src = "images/dot.gif";
shadowGif.src = "images/dotShadow.gif";

function showShadow( src ) {
	if( !src.contains( event.fromElement ) ) {
		shadowVote = parseInt( ( src.id ).substring( 5 ) );
		qTable = parseInt( ( src.id ).substring( 4, 5 ) );
		updateVotingTable( qTable );
	}
}

function hideShadow( src ) {
	if( !src.contains( event.toElement ) ) {
		shadowVote = -1
		qTable = parseInt( ( src.id ).substring( src.id.length - 1, src.id.length ) );
		updateVotingTable( qTable );
	}
}

function registerVote( src ) {
	qTable = parseInt( ( src.id ).substring( 4, 5 ) );
	currentVotes[qTable] = parseInt( ( src.id ).substring( 5 ) );
	updateVotingTable( qTable );
}

function updateVotingTable( qTable ) {
	for ( var i=0; i<voteOptions; i++ ) {
		if ( i == currentVotes[qTable] ) {
			document.all['cellImg' + qTable + i].src = voteGif.src;
		} else {
			if ( i == shadowVote ) {
				document.all['cellImg' + qTable + i].src = shadowGif.src;
			} else {
				document.all['cellImg' + qTable + i].src = blankGif.src;
			}
		}
		document.all['cell' + qTable + i].onmouseover = new Function( "showShadow( this );" );
		document.all['cell' + qTable + i].onclick = new Function( "registerVote( this );" );
	}
}

function initVotingTables() {
	if ( document.all["votingTable0"] != null ) {
		for ( var i=0; i<2; i++ ) {
			updateVotingTable( i );
		}
	}
}

function showFeedback( f ) {
	document.all["feedBack"].innerText = f;
}

function showVotes() {
	for ( var i=0; i<currentVotes.length; i++ ) {
		var delimiter = ( i > 0 )? '|' : '';
		document.voteForm.votes.value = document.voteForm.votes.value + delimiter + currentVotes[i];
	}
	document.voteForm.submit();
	return true;
}

var briefImages = new Array();
briefImages[0] = new Image();
briefImages[1] = new Image();
briefImages[0].src = "images/brief.gif";
briefImages[1].src = "images/brief_h.gif";

var forumImages = new Array();
forumImages[0] = new Image();
forumImages[1] = new Image();
forumImages[0].src = "images/forum.gif";
forumImages[1].src = "images/forum_h.gif";

var discImages = new Array();
discImages[0] = new Image();
discImages[1] = new Image();
discImages[0].src = "images/disc.gif";
discImages[1].src = "images/disc_h.gif";

var homeImages = new Array();
homeImages[0] = new Image();
homeImages[1] = new Image();
homeImages[0].src = "images/home.gif";
homeImages[1].src = "images/home_h.gif";

var archiveImages = new Array();
archiveImages[0] = new Image();
archiveImages[1] = new Image();
archiveImages[0].src = "images/archive.gif";
archiveImages[1].src = "images/archive_h.gif";

var otherImages = new Array();
otherImages[0] = new Image();
otherImages[1] = new Image();
otherImages[0].src = "images/otherforums.gif";
otherImages[1].src = "images/otherforums_h.gif";

function highlightMenuItem( theItem ) {
	if( !theItem.contains( event.fromElement ) ) {
		if ( ( theItem.id ).indexOf( "Brief" ) > -1 ) {
			document.all[theItem.id].src = briefImages[1].src;
		}
		if ( ( theItem.id ).indexOf( "Forum" ) > -1 ) {
			document.all[theItem.id].src = forumImages[1].src;
		}
		if ( ( theItem.id ).indexOf( "Disc" ) > -1 ) {
			document.all[theItem.id].src = discImages[1].src;
		}
		if ( ( theItem.id ).indexOf( "Home" ) > -1 ) {
			document.all[theItem.id].src = homeImages[1].src;
		}
		if ( ( theItem.id ).indexOf( "Archive" ) > -1 ) {
			document.all[theItem.id].src = archiveImages[1].src;
		}
		if ( ( theItem.id ).indexOf( "Other" ) > -1 ) {
			document.all[theItem.id].src = otherImages[1].src;
		}
	}
}

function dimMenuItem( theItem ) {
	if( !theItem.contains( event.toElement ) ) {
		if ( ( theItem.id ).indexOf( "Brief" ) > -1 ) {
			document.all[theItem.id].src = briefImages[0].src;
		}
		if ( ( theItem.id ).indexOf( "Forum" ) > -1 ) {
			document.all[theItem.id].src = forumImages[0].src;
		}
		if ( ( theItem.id ).indexOf( "Disc" ) > -1 ) {
			document.all[theItem.id].src = discImages[0].src;
		}
		if ( ( theItem.id ).indexOf( "Home" ) > -1 ) {
			document.all[theItem.id].src = homeImages[0].src;
		}
		if ( ( theItem.id ).indexOf( "Archive" ) > -1 ) {
			document.all[theItem.id].src = archiveImages[0].src;
		}
		if ( ( theItem.id ).indexOf( "Other" ) > -1 ) {
			document.all[theItem.id].src = otherImages[0].src;
		}
	}

}

function doNavigation( theItem ) {
	if ( ( theItem.id ).indexOf( "Contribution" ) > -1 ) {
		if ( parent.frames.length > 0 ) {
			parent.parent.location = "http://www.democracyforum.org.uk/briefing.asp";
		} else {
			location = "http://www.democracyforum.org.uk/briefing.asp";
		}
	}
	if ( ( theItem.id ).indexOf( "Briefing" ) > -1 ) {
		if ( parent.frames.length > 0 ) {
			parent.parent.location = "briefing.asp";
		} else {
			location = "briefing.asp";
		}
	}
	if ( ( theItem.id ).indexOf( "Links" ) > -1 ) {
		if ( parent.frames.length > 0 ) {
			parent.parent.location = "http://www.democracyforum.org.uk/edemocracy.asp";
		} else {
			location = "http://www.democracyforum.org.uk/edemocracy.asp";
		}
	}

}

function createMenuItems( dType ) {
	if ( document.all['menuHome'] != null ) {
		document.all['menuHome'].onmouseover = new Function( "highlightMenuItem( this );" );
		document.all['menuHome'].onmouseout = new Function( "dimMenuItem( this );" );
		document.all['menuHome'].onclick = new Function( "doNavigation( this );" );
		document.all['menuHome'].style.cursor = "hand";
	} else {
		document.all['menuOther'].onmouseover = new Function( "highlightMenuItem( this );" );
		document.all['menuOther'].onmouseout = new Function( "dimMenuItem( this );" );
		document.all['menuOther'].onclick = new Function( "doNavigation( this );" );
		document.all['menuOther'].style.cursor = "hand";
	}
}

var home_off;
var home_on;
var briefing_off;
var briefing_on;
var contribution_off;
var contribution_on;
var links_off;
var links_on;
var body1_off;
var body1_on;
var body2_off;
var body2_on;
var body3_off;
var body3_on;

function preloadMenuImages() {
	if ( document.images != null ){
		home_off = new Image();
		home_on = new Image();
		briefing_off = new Image();
		briefing_on = new Image();
		contribution_off = new Image();
		contribution_on = new Image();
		links_off = new Image();
		links_on = new Image();
		home_off.src = "images/home_0.gif";
		home_on.src = "images/home_1.gif";
		briefing_off.src = "images/briefing_0.gif";
		briefing_on.src = "images/briefing_1.gif";
		contribution_off.src = "images/contribution_0.gif";
		contribution_on.src = "images/contribution_1.gif";
		links_off.src = "images/links_0.gif";
		links_on.src = "images/links_1.gif";
	}
}

function preloadHomeImages() {
	if ( document.images != null ){
		home_off = new Image();
		home_on = new Image();
		home_off.src = "images/home_0.gif";
		home_on.src = "images/home_1.gif";
		body1_off = new Image();
		body1_on = new Image();
		body2_off = new Image();
		body2_on = new Image();
		body3_off = new Image();
		body3_on = new Image();
		body1_off.src = "images/body1_0.gif";
		body1_on.src = "images/body1_1.gif";
		body2_off.src = "images/body2_0.gif";
		body2_on.src = "images/body2_1.gif";
		body3_off.src = "images/body3_0.gif";
		body3_on.src = "images/body3_1.gif";
	}
}

function doMenuItemOver( theSrc ) {
	if ( document.images != null ) {
		if ( eval( theSrc + "_on" ) != null ) {
			if ( eval( theSrc + "_on" ).complete ) {
				document[theSrc].src = eval( theSrc + "_on.src" );
			}
		}
	}
}

function doMenuItemOut( theSrc ) {
	if ( document.images != null ){
		if ( eval( theSrc + "_off" ) != null ) {
			if ( eval( theSrc + "_off" ).complete ) {
				document[theSrc].src = eval( theSrc + "_off.src" );
			}
		}
	}
}