/*
	Scrolling News Ticker

	version 1.000

	Copyright (c) 2005 Josh Dechant.

  Released under the GNU General Public License
*/

function newsTicker(TheID, TheHeight, TheWidth, TheScrollAmount, TheScrollDelay, TheHtml) {
  TickerID = TheID;
  TickerAmount = (TheScrollAmount ? TheScrollAmount : 5);
  TickerDelay = (TheScrollDelay ? TheScrollDelay : 50);
  TickerName = 'newsTicker1';
  TickerHtml  = '<nobr>' + TheHtml + '</nobr>';

	TickerIEDOM = ((document.all || document.getElementById) ? true : false);

	//slow speed down by 1 for NS
	TickerAmount = ((document.all) ? TickerAmount : Math.max(1, TickerAmount - 1));

	TickerCopyAmount = TickerAmount;
	TickerPauseAmount = 0;

  if (typeof(TheHeight) == 'number') {
    TickerHeight = TheHeight;
    TickerHeightUnit = 'px';
  } else if (typeof(TheHeight) == 'string') {
    TickerHeight = parseInt('0' + TheHeight, 10);
    TickerHeightUnit = TheHeight.toLowerCase().replace(/^[0-9]+/, '');
  } else {
    TickerHeight = 200;
    TickerHeightUnit = 'px';
  }

  if (typeof(TheWidth) == 'number') {
    TickerWidth = TheWidth;
    TickerWidthUnit = 'px';
  } else if (typeof(TheWidth) == 'string') {
    TickerWidth = parseInt('0' + TheWidth, 10);
    TickerWidthUnit = TheWidth.toLowerCase().replace(/^[0-9]+/, '');
  } else {
    TickerWidth = 100;
    TickerWidthUnit = 'px';
  }

	TickerCombinedCSS = 'width: ' + TickerWidth + TickerWidthUnit + '; height: ' + TickerHeight + TickerHeightUnit + ';';

	if (TickerIEDOM == true) {
		document.write('<span id="' + TickerID + '" style="visibility: hidden; position: absolute; top: -100px; left: -10000px;">' + TickerHtml + '</span>');
	}

	TickerActualWidth = '';

	if (window.addEventListener) {
		window.addEventListener('load', TickerPopulate, false);
		window.addEventListener('unload', TickerSaveLastMsg, false);
	} else if (window.attachEvent) {
		window.attachEvent('onload', TickerPopulate);
		window.attachEvent('onunload', TickerSaveLastMsg);
	} else if (document.all || document.getElementById) {
		window.onload = TickerPopulate;
		window.onunload = TickerSaveLastMsg;
	}
}

function TickerPopulate() {
	TickerContainerDiv = TickerGetElm(TickerID + 'Container');

	TickerDiv = TickerGetElm(TickerID);

	TickerContainerDiv.style.left = TickerWidth + 8 + TickerWidthUnit;

	if (TickerGetCookie('newsTickerLastPos') != '') {
		TickerRememberLastMsg();
	}

	TickerContainerDiv.innerHTML = TickerHtml;

	TickerActualWidth = TickerDiv.offsetWidth;

	TickerTime = setInterval("TickerScroll()", TickerDelay);
}

function TickerGetElm(id) {
	var elm = null;

	if (document.getElementById) {
		elm = document.getElementById(id);
	} else {
		elm = document.all[id];
	}

	return elm;
}

function TickerGetCookie(Name) {
	var search = Name + '=';
	var returnvalue = '';
	var offset;
	var end;

	if (document.cookie.length > 0) {
		offset = document.cookie.indexOf(search);

		if (offset != -1) {
			offset += search.length;
			end = document.cookie.indexOf(";", offset);

			if (end == -1) {
				end = document.cookie.length;
			}

			returnvalue = unescape(document.cookie.substring(offset, end));
		}
	}

	return returnvalue;
}

function TickerSaveLastMsg() {
	document.cookie = 'newsTickerLastPos=' + TickerContainerDiv.style.left;
}

function TickerRememberLastMsg() {
	var lastPosition;

	lastPosition = parseInt(TickerGetCookie("newsTickerLastPos"));

	TickerContainerDiv.style.left = parseInt(lastPosition) + 'px';
}

function TickerScroll() {
	if (parseInt(TickerContainerDiv.style.left) > (TickerActualWidth*(-1)+8)) {
		TickerContainerDiv.style.left = parseInt(TickerContainerDiv.style.left) - TickerCopyAmount + 'px';
	} else {
		TickerContainerDiv.style.left = parseInt(TickerWidth) + TickerCopyAmount + 8 + TickerHeightUnit;
	}
}

function newsTicker_init() {
	if (TickerIEDOM) {
		with (document) {
			write('<div style="position: relative; overflow: hidden; '+ TickerCombinedCSS +'" onmouseover="TickerCopyAmount=TickerPauseAmount" onmouseout="TickerCopyAmount=TickerAmount">');
			write('<div id="' + TickerID + 'Container" style="position: absolute; left: 0px; top: 0px;"></div>');
			write('</div>');
		}
	}
}