function trimString (s) {
		while (s.substring(0,1) == ' ') {
			s = s.substring(1,s.length);
		}
		while (s.substring(s.length-1,s.length) == ' ') {
			s = s.substring(0,s.length-1);
		}
		return s;
	}
	
	function getCookies() {
		// [JAS]: Set up the scope for reading back in the cookies
		tempArray = document.cookie.split(';');
		cookieArray = new Array();
		x = 0;
		
		for (idx in tempArray) {
	  		cookieArray[x] = tempArray[idx].split('=');
	  		cookieArray[x][0] = trimString(cookieArray[x][0]);
	  		x++;
	  	}
	
		return cookieArray;
	}
	
	function getCookieVal(cookies,findCookieName) {
		for (idx in cookies) {
			cookieName = cookies[idx][0];
			if(cookieName == findCookieName) {
				return cookies[idx][1];
			}
		}
		
		return false;
	}
	
	function getCerPacketData(strPacket) {
		tempArray = strPacket.split(';');
		packetArray = new Array();
		x = 0;
		
		for (idx in tempArray) {
			packetArray[x] = tempArray[x].split('=');
			packetArray[x][0] = trimString(packetArray[x][0]);
			x++;
		}
		
		return packetArray;
	}
	
	function getCerPacketFlag(packetFlags,findPacketFlag) {
		for (idx in packetFlags) {
			flagName = packetFlags[idx][0];
			if(flagName == findPacketFlag) {
				return packetFlags[idx][1];
			}
		}
		
		return false;
	}
	
	function chatInviteAccept(inviteId) {
		inviteWindow = document.getElementById("chatWdw");
		inviteWindow.style.visibility = "hidden";
		var voiderThread = new Image();
		voiderThread.src = "http://www.pcb123.com/cerberus/cerberus-livehelp/visitor.php?action=accept_invite&invite=" + inviteId + "&chatVisitor=" + chatVisitor;
		
		cer_launchChat();
	}
	
	function chatInviteReject(inviteId) {
		inviteWindow = document.getElementById("chatWdw");
		inviteWindow.style.visibility = "hidden";
		var voiderThread = new Image();
		voiderThread.src = "http://www.pcb123.com/cerberus/cerberus-livehelp/visitor.php?action=reject_invite&invite=" + inviteId + "&chatVisitor=" + chatVisitor;
	}
	
	function showInviteWindow(inviteId, agentName, message) {
		
		try {
			
			inviteWindow = document.getElementById("chatWdw");
			
			if(undefined == inviteWindow) {
				var tmpInviteWdw = document.createElement("DIV");
				tmpInviteWdw.id = "chatWdw";
				document.body.appendChild(tmpInviteWdw);
				
				inviteWindow = document.getElementById("chatWdw");
			}
			
			inviteWindow.innerHTML = "" +
			"<table bgcolor='#114663' border='0' cellpadding='2' cellspacing='0' width='250'>" + 
				"<tr><td>" +
					"<table bgcolor='#114663' border='0' cellpadding='2' cellspacing='0' width='100%'>" + 
					"<tr bgcolor='#0265C0'>"+
					"<td align='center'><font color='white'><b>You've been invited to chat!</b></font></td></tr>" + 
					"<tr><td bgcolor='#EDEDED'>" +
					"<font color='red'><b>" + agentName + "</b></font><font color='black'>: " + message + "</font>" +
					"<br>" +
					"<table width='100%'><tr>"+
					"<td align='left'><input type='button' style='background-color: #56D919; color: #FFFFFF; font-weight: bold;' value='Chat!' onclick=\"javascript:chatInviteAccept('"+inviteId+"');\"></td>"+
					"<td align='right'><input type='button' style='background-color: #E32F2F; color: #FFFFFF; font-weight: bold;' value='No thanks!' onclick=\"javascript:chatInviteReject('"+inviteId+"');\"></td>"+
					"</table>" +
					"</td></tr>" + 
					"</table>" +
				"</td></tr>" + 
			"</table>";
			
			positionInviteWindow();
			
		} catch(exception) {
			alert(exception);
		}
	}
	
	function positionInviteWindow() {
	
		if(document.getElementById) {
			inviteWindow = document.getElementById("chatWdw");
		}
		else
			return;
		
		if(null == inviteWindow)
			return;
			
		if(inviteWindow.style.visibility == "hidden")
			return;
	
		// Konq
		if (window && window.innerHeight && document.body && document.body.scrollTop != undefined) {
			xPos = window.innerWidth;
			yPos = window.innerHeight;
			xPos = (xPos - 250) / 2;
			yPos = (yPos - 150) / 2;
			xPos += document.body.scrollLeft;
			yPos += document.body.scrollTop;
		}
		// IE + Firefox
		else if(document.body && document.body.clientWidth) {
			xPos = document.body.clientWidth;
			yPos = document.body.clientHeight;
			xPos = (xPos - 250) / 2;
			yPos = (yPos - 150) / 2;
			xPos += document.body.scrollLeft;
			yPos += document.body.scrollTop;
		}
		else if(document.documentElement && document.documentElement.clientWidth) {
			xPos = document.documentElement.clientWidth;
			yPos = document.documentElement.clientHeight;
			xPos = (xPos - 250) / 2;
			yPos = (yPos - 150) / 2;
			xPos += document.documentElement.scrollLeft;
			yPos += document.documentElement.scrollTop;
		}
		else {
			xPos = 100;
			yPos = 100;
		}

		inviteWindow.style.position = "absolute";
		inviteWindow.style.top = yPos + "px";
		inviteWindow.style.left = xPos + "px";
		inviteWindow.style.visibility = "visible";
		
		setTimeout('positionInviteWindow()', 100);
	}
	
	// [JAS]: Keep a heartbeat going so we can detect visitors who have idled out from
	//	those who are simply reading a page a long time.
	function runChatHeartbeat(is_heartbeat) {
	
		// [JAS]: Thump, thump.

		var url = "http://www.pcb123.com/cerberus/cerberus-livehelp/visitor.php?is_heartbeat=" + is_heartbeat + "&chatVisitor=" + chatVisitor + "&location=" + escape(document.location) + "&referrer=" + escape(document.referrer);
		
		try {
			if(document.getElementById)
				cerData = document.getElementById("cerData");
			
			if(!cerData && document.body && document.body.appendChild) {
				var tDataObj=document.createElement('iframe');
				tDataObj.setAttribute('id','cerData');
				tDataObj.setAttribute('name','cerData');
				tDataObj.setAttribute('border','0');
				tDataObj.setAttribute('src', url);
				tDataObj.style.border='0px';
				tDataObj.style.width='0px';
				tDataObj.style.height='0px';
				tDataObj.style.visibility='hidden';
				tmpData = document.body.appendChild(tDataObj);
				cerData = document.getElementById("cerData");
				cerReload = false;
			}
			else {
				cerReload = true;
			}
			
			cerDataPacketString = "";
			
			if(cerData.contentDocument && cerData.contentDocument.body) {
				cerDataPacketString = cerData.contentDocument.body.innerHTML;
				if(cerReload) { 
					cerData.contentDocument.location = url;
				}
			}
			else if (cerData.contentWindow.document && cerData.contentWindow.document.body) {
				cerDataPacketString = cerData.contentWindow.document.body.innerHTML;
				if(cerReload) { 
					cerData.contentWindow.document.location = url;
				}
			}
			else {
				//alert("I'm something else entirely!");
			}
			
			// [JAS]: Get any flags we need to know about from the server packet
			cerDataPacket = new Array();
			if(cerDataPacketString) {
				cerDataPacket = getCerPacketData(cerDataPacketString);
			}
			
			// Chat invites?
			if((flagChatInvite = getCerPacketFlag(cerDataPacket,"invite_request")) && 
				(inviteAgentName = getCerPacketFlag(cerDataPacket,"invite_agent_name")) && 
				(inviteMessage = getCerPacketFlag(cerDataPacket,"invite_message"))) {
				
				if(!cerInviteActive) {
					showInviteWindow(flagChatInvite,inviteAgentName,inviteMessage);
					cerInviteActive = true;
				}
			}
			
		} catch(exception) {
			//alert(exception);
			var visit = new Image();
			visit.src = url;
		}
		
		num_heartbeats++;
		
		// [JAS]: Only keep the heartbeat alive for 15 mins on a single page
		if(num_heartbeats <= 31) {
			setTimeout('runChatHeartbeat(1)',(!cerReload || num_heartbeats < 4) ? 10000 : 30000);
		}
	}
	
	function cer_launchChat() {
		window.open("http://www.pcb123.com/cerberus/cerberus-livehelp/chat_window/index.php?visitor=" + chatVisitor,"cer_ChatWnd","width=400,height=500,resize=yes,menu=no,scrollbars=no,status=no");
	}
	
	var num_heartbeats = 0;
	var cookies = new Array();
	var chatVisitor = null;
	var cerData = null;
	var cerDataPacketString = null;
	var cerDataPacket = new Array();
	var cerReload = null;
	var cerInviteActive = false;
	
	cookies = getCookies();
	
	var todayDate = new Date;
	todayDate.setDate(todayDate.getDate() + 7);
	
	if(chatVisitor = getCookieVal(cookies,"chatVisitor")) {
		// alert("We are a returning visitor with GUID: " + chatVisitor);
	}
	else {
		chatVisitor = escape('343adaa58eeaa5cb0f26813c7a406088');
		document.cookie = 'chatVisitor=' + chatVisitor + '; expires=' + todayDate.toGMTString() + ';';
	}
	
	setTimeout('runChatHeartbeat(0);',1000);