var ie = document.all ? true : false;
var first = true;
var gNext = 1;
var gPrevious = 0;
var gMsgFrameX; // X position of the Invisible Msg Frame
var gMsgFrameY; // X coordinate of the Invisible Msg Frame
var gMsgFrameWidth; // width of the Invisible Msg Frame
var gMsgTextBeginPos; // X position of the point the Msg Text should start scrolling
var gMsgWidth; // the width of the message text begin scrolled
var gMsgTextEndPos; // X position of the point the message should stop scrolling
var gMsgTextPos; // current position of the message text
var gDist = 1; // the distance the text is scrolled from right to left each time
var gTimerID; // ID of the timer, used for stopping the timer
var gMsgNbr = -1; // the number of the message being scrolled
var gMsgs; // the array of messages to be scrolled
var gSeqs; // the array of messages to be scrolled
var gNew; // array to indicare whether a message is brand new
var gOriginalDist; // original distance used for scrolling at each interval
var gLoggedIn; // whether user is logged in or not
var gEmpty; // whether there are no messages in the arrays
function getMsg (pNext) {
vNewMsg = "";
if (pNext == gNext) {
gMsgNbr = (gMsgNbr == gMsgs.length - 1) ? 0 : gMsgNbr + 1;
} else {
gMsgNbr = (gMsgNbr == 0) ? gMsgs.length - 1 : gMsgNbr - 1;
}
if (gURLs[gMsgNbr] == "") {
vText = "" +
gMsgs[gMsgNbr] + "";
} else {
vText = "" + gMsgs[gMsgNbr] + "";
}
if (ie) {
MsgText.innerHTML = "" + vText;
gMsgWidth = MsgText.offsetWidth;
} else {
document.MsgText.document.write("" + vText);
document.MsgText.document.close();
gMsgWidth = document.MsgText.document.width;
}
// reposition the message to start from the right of the Message Frame and
// adjust the End position where the scroller should stop
gMsgTextBeginPos = gMsgFrameX + gMsgFrameWidth;
gMsgTextEndPos = gMsgFrameX - gMsgWidth;
gMsgTextPos = gMsgTextBeginPos;
}
function ScrollerInit () {
gOriginalDist = gDist;
if (ie) {
vFacePlate = document.all['FacePlate'];
gMsgFrameX = getLeft(vFacePlate);
gMsgFrameY = getTop(vFacePlate);
} else {
vFacePlate = document.images['FacePlate'];
gMsgFrameX = vFacePlate.x;
gMsgFrameY = vFacePlate.y;
}
gMsgFrameX = gMsgFrameX + 5;
gMsgFrameWidth = vFacePlate.width - (5 * 2);
gMsgFrameY = gMsgFrameY + 0;
gEmpty = false;
if (gMsgs.length == 0) {
if (gLoggedIn) {
gMsgs[0] = "There are no unread messages.";
} else {
gMsgs[0] = "There are no messages in the bulletin board.";
}
gSeqs[0] = "0";
gEmpty = true;
}
getMsg(gNext);
gTimerID = setInterval('Scroll()', 1);
}
function getLeft(ll) {
if (ll.offsetParent)
return (ll.offsetLeft + getLeft(ll.offsetParent));
else
return (ll.offsetLeft);
}
function getTop(ll) {
if (ll.offsetParent)
return (ll.offsetTop + getTop(ll.offsetParent));
else
return (ll.offsetTop);
}
function StartStopScroller() {
if (gTimerID != 0) {
clearInterval (gTimerID);
gTimerID = 0;
} else {
gTimerID = setInterval('Scroll()', 10);
}
}
function PreviousMsg() {
getMsg(gPrevious);
if (gTimerID == 0) {
gTimerID = setInterval('Scroll()', 10);
}
}
function NextMsg() {
getMsg(gNext);
if (gTimerID == 0) {
gTimerID = setInterval('Scroll()', 10);
}
}
function Slower() {
gDist = gDist / 2;
}
function Faster() {
gDist = gDist * 2;
}
function ShowFullList() {
self.location.href = "/pls/crimlink/cl$bm.show_all";
}
function Scroll() {
gMsgTextPos = gMsgTextPos - gDist;
if (gMsgTextPos < gMsgTextEndPos) {
getMsg(gNext);
}
cl = gMsgFrameX - gMsgTextPos;
cr = gMsgTextBeginPos - gMsgTextPos;
if (ie) {
MsgText.style.posLeft = gMsgTextPos;
MsgText.style.posTop = gMsgFrameY;
MsgText.style.clip = "rect(auto "+cr+"px auto "+cl+"px)";
if (first) MsgText.style.visibility = "visible";
} else {
document.MsgText.pageX = gMsgTextPos;
document.MsgText.pageY = gMsgFrameY;
document.MsgText.clip.left = cl;
document.MsgText.clip.right = cr;
if (first) document.MsgText.visibility = "show";
}
first = false;
}
function Refresh(){
self.location.reload();
}
window.onload = ScrollerInit;
window.onresize = Refresh;
window.onunload = SaveSettings;