xajax.inc.php

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		if (is_array($mFunction)) {
			$this->sPreFunction = $mFunction[0];
			$this->aObjects[$mFunction[0]] = array_slice($mFunction, 1);
		}
		else {
			$this->sPreFunction = $mFunction;
		}
	}

	// returns true if xajax can process the request, false if otherwise
	// you can use this to determine if xajax needs to process the request or not
	function canProcessRequests()
	{
		if ($this->getRequestMode() != -1) return true;
		return false;
	}

	// returns the current request mode, or -1 if there is none
	function getRequestMode()
	{
		if (!empty($_GET["xajax"]))
			return XAJAX_GET;

		if (!empty($_POST["xajax"]))
			return XAJAX_POST;

		return -1;
	}

	// processRequests() is the main communications engine of xajax
	// The engine handles all incoming xajax requests, calls the apporiate PHP functions
	// and passes the xml responses back to the javascript response handler
	// if your RequestURI is the same as your web page then this function should
	// be called before any headers or html has been sent.
	// usage: $xajax->processRequests()
	function processRequests()
	{

		$requestMode = -1;
		$sFunctionName = "";
		$bFoundFunction = true;
		$bFunctionIsCatchAll = false;
		$sFunctionNameForSpecial = "";
		$aArgs = array();
		$sPreResponse = "";
		$bEndRequest = false;
		$sResponse = "";

		$requestMode = $this->getRequestMode();
		if ($requestMode == -1) return;

		if ($requestMode == XAJAX_POST)
		{
			$sFunctionName = $_POST["xajax"];

			if (!empty($_POST["xajaxargs"]))
				$aArgs = $_POST["xajaxargs"];
		}
		else
		{
			header ("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
			header ("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
			header ("Cache-Control: no-cache, must-revalidate");
			header ("Pragma: no-cache");

			$sFunctionName = $_GET["xajax"];

			if (!empty($_GET["xajaxargs"]))
				$aArgs = $_GET["xajaxargs"];
		}

		// Use xajax error handler if necessary
		if ($this->bErrorHandler) {
			$GLOBALS['xajaxErrorHandlerText'] = "";
			set_error_handler("xajaxErrorHandler");
		}

		if ($this->sPreFunction) {
			if (!$this->_isFunctionCallable($this->sPreFunction)) {
				$bFoundFunction = false;
				$objResponse = new xajaxResponse();
				$objResponse->addAlert("Unknown Pre-Function ". $this->sPreFunction);
				$sResponse = $objResponse->getXML();
			}
		}
		//include any external dependencies associated with this function name
		if (array_key_exists($sFunctionName,$this->aFunctionIncludeFiles))
		{
			ob_start();
			include_once($this->aFunctionIncludeFiles[$sFunctionName]);
			ob_end_clean();
		}

		if ($bFoundFunction) {
			$sFunctionNameForSpecial = $sFunctionName;
			if (!array_key_exists($sFunctionName, $this->aFunctions))
			{
				if ($this->sCatchAllFunction) {
					$sFunctionName = $this->sCatchAllFunction;
					$bFunctionIsCatchAll = true;
				}
				else {
					$bFoundFunction = false;
					$objResponse = new xajaxResponse();
					$objResponse->addAlert("Unknown Function $sFunctionName.");
					$sResponse = $objResponse->getXML();
				}
			}
			else if ($this->aFunctionRequestTypes[$sFunctionName] != $requestMode)
			{
				$bFoundFunction = false;
				$objResponse = new xajaxResponse();
				$objResponse->addAlert("Incorrect Request Type.");
				$sResponse = $objResponse->getXML();
			}
		}

		if ($bFoundFunction)
		{
			for ($i = 0; $i < sizeof($aArgs); $i++)
			{
				// If magic quotes is on, then we need to strip the slashes from the args
				if (get_magic_quotes_gpc() == 1 && is_string($aArgs[$i])) {

					$aArgs[$i] = stripslashes($aArgs[$i]);
				}
				if (stristr($aArgs[$i],"<xjxobj>") != false)
				{
					$aArgs[$i] = $this->_xmlToArray("xjxobj",$aArgs[$i]);
				}
				else if (stristr($aArgs[$i],"<xjxquery>") != false)
				{
					$aArgs[$i] = $this->_xmlToArray("xjxquery",$aArgs[$i]);
				}
				else if ($this->bDecodeUTF8Input)
				{
					$aArgs[$i] = $this->_decodeUTF8Data($aArgs[$i]);
				}
			}

			if ($this->sPreFunction) {
				$mPreResponse = $this->_callFunction($this->sPreFunction, array($sFunctionNameForSpecial, $aArgs));
				if (is_array($mPreResponse) && $mPreResponse[0] === false) {
					$bEndRequest = true;
					$sPreResponse = $mPreResponse[1];
				}
				else {
					$sPreResponse = $mPreResponse;
				}
				if (is_a($sPreResponse, "xajaxResponse")) {
					$sPreResponse = $sPreResponse->getXML();
				}
				if ($bEndRequest) $sResponse = $sPreResponse;
			}

			if (!$bEndRequest) {
				if (!$this->_isFunctionCallable($sFunctionName)) {
					$objResponse = new xajaxResponse();
					$objResponse->addAlert("The Registered Function $sFunctionName Could Not Be Found.");
					$sResponse = $objResponse->getXML();
				}
				else {
					if ($bFunctionIsCatchAll) {
						$aArgs = array($sFunctionNameForSpecial, $aArgs);
					}
					$sResponse = $this->_callFunction($sFunctionName, $aArgs);
				}
				if (is_a($sResponse, "xajaxResponse")) {
					$sResponse = $sResponse->getXML();
				}
				if (!is_string($sResponse) || strpos($sResponse, "<xjx>") === FALSE) {
					$objResponse = new xajaxResponse();
					$objResponse->addAlert("No XML Response Was Returned By Function $sFunctionName.");
					$sResponse = $objResponse->getXML();
				}
				else if ($sPreResponse != "") {
					$sNewResponse = new xajaxResponse($this->sEncoding, $this->bOutputEntities);
					$sNewResponse->loadXML($sPreResponse);
					$sNewResponse->loadXML($sResponse);
					$sResponse = $sNewResponse->getXML();
				}
			}
		}

		$sContentHeader = "Content-type: text/xml;";
		if ($this->sEncoding && strlen(trim($this->sEncoding)) > 0)
			$sContentHeader .= " charset=".$this->sEncoding;
		header($sContentHeader);
		if ($this->bErrorHandler && !empty( $GLOBALS['xajaxErrorHandlerText'] )) {
			$sErrorResponse = new xajaxResponse();
			$sErrorResponse->addAlert("** PHP Error Messages: **" . $GLOBALS['xajaxErrorHandlerText']);
			if ($this->sLogFile) {
				$fH = @fopen($this->sLogFile, "a");
				if (!$fH) {
					$sErrorResponse->addAlert("** Logging Error **\n\nxajax was unable to write to the error log file:\n" . $this->sLogFile);
				}
				else {
					fwrite($fH, "** xajax Error Log - " . strftime("%b %e %Y %I:%M:%S %p") . " **" . $GLOBALS['xajaxErrorHandlerText'] . "\n\n\n");
					fclose($fH);
				}
			}

			$sErrorResponse->loadXML($sResponse);
			$sResponse = $sErrorResponse->getXML();

		}
		if ($this->bCleanBuffer) @ob_get_clean();
		print $sResponse;
		if ($this->bErrorHandler) restore_error_handler();

		if ($this->bExitAllowed)
			exit();
	}

	// printJavascript() prints the xajax javascript code into your page by printing
	// the output of the getJavascript() method. It should only be called between the
	// <head> </head> tags in your HTML page. Remember, if you only want to obtain the
	// result of this function, use getJavascript() instead.
	// $sJsURI is the relative address of the folder where xajax has been installed.
	//   For instance, if your PHP file is "http://www.myserver.com/myfolder/mypage.php"
	//   and xajax was installed in "http://www.myserver.com/anotherfolder", then
	//   $sJsURI should be set to "../anotherfolder". Defaults to assuming xajax is in
	//   the same folder as your PHP file.
	// $sJsFile is the relative folder/file pair of the xajax Javascript engine located
	// within the xajax installation folder. Defaults to xajax_js/xajax.js.
	// usage:
	//	<head>
	//		...
	//		< ?php $xajax->printJavascript(); ? >
	function printJavascript($sJsURI="", $sJsFile=NULL)
	{
		print $this->getJavascript($sJsURI, $sJsFile);
	}

	// getJavascript() returns the xajax javascript code that should be added to
	// your HTML page between the <head> </head> tags. See printJavascript()
	// for information about the function arguments.
	// usage:
	//  < ?php $xajaxJSHead = $xajax->getJavascript(); ? >
	//	<head>
	//		...
	//		< ?php echo $xajaxJSHead; ? >
	function getJavascript($sJsURI="", $sJsFile=NULL)
	{
		$html = $this->getJavascriptConfig();
		$html .= $this->getJavascriptInclude($sJsURI, $sJsFile);

		return $html;
	}

	// getJavascriptConfig() returns a string containing inline Javascript that sets
	// up the xajax runtime
	function getJavascriptConfig()
	{
		$html  = "\t<script type=\"text/javascript\">\n";
		$html .= "var xajaxRequestUri=\"".$this->sRequestURI."\";\n";
		$html .= "var xajaxDebug=".($this->bDebug?"true":"false").";\n";
		$html .= "var xajaxStatusMessages=".($this->bStatusMessages?"true":"false").";\n";
		$html .= "var xajaxWaitCursor=".($this->bWaitCursor?"true":"false").";\n";
		$html .= "var xajaxDefinedGet=".XAJAX_GET.";\n";
		$html .= "var xajaxDefinedPost=".XAJAX_POST.";\n";
		$html .= "var xajaxLoaded=false;\n";

		foreach($this->aFunctions as $sFunction => $bExists) {
			$html .= $this->_wrap($sFunction,$this->aFunctionRequestTypes[$sFunction]);
		}

		$html .= "\t</script>\n";
		return $html;
	}

	// getJavascriptInclude() returns a string containing a Javascript include of the
	// xajax.js file along with a check to see if the file loaded after six seconds
	function getJavascriptInclude($sJsURI="./xajax/", $sJsFile=NULL)
	{
		if ($sJsFile == NULL) $sJsFile = "../../lib/common/xajax/xajax_js/xajax.js";
			// \ajax\xajax\xajax_js
		//if ($sJsURI != "" && substr($sJsURI, -1) != "/") $sJsURI .= "xajax/";

		//$html = "\t<script type=\"text/javascript\" src=\"" . $sJsURI . $sJsFile . "\"></script>\n";
		$html = "\t<script type=\"text/javascript\" src=\"../../lib/common/xajax/xajax_js/xajax.js\"></script>\n";
		$html .= "\t<script type=\"text/javascript\">\n";
		$html .= "window.setTimeout(function () { if (!xajaxLoaded) { alert('Error: the xajax Javascript file could not be included. Perhaps the URL is incorrect?\\nURL: {$sJsURI}{$sJsFile}'); } }, 4000);\n";
		$html .= "\t</script>\n";
		return $html;
	}

	// autoCompressJavascript() can be used to create a new xajax.js file out of the
	// xajax_uncompressed.js file (which will only happen if xajax.js doesn't already
	// exist on the filesystem).
	// $sJsFullFilename is an optional argument containing the full server file path
	//  of xajax.js.
	function autoCompressJavascript($sJsFullFilename=NULL)
	{
		$sJsFile = "xajax_js/xajax.js";

		if ($sJsFullFilename) {
			$realJsFile = $sJsFullFilename;
		}
		else {
			$realPath = realpath(dirname(__FILE__));
			$realJsFile = $realPath . "/". $sJsFile;
		}

		// Create a compressed file if necessary
		if (!file_exists($realJsFile)) {
			$srcFile = str_replace(".js", "_uncompressed.js", $realJsFile);
			if (!file_exists($srcFile)) {
				trigger_error("The xajax uncompressed Javascript file could not be found in the <b>" . dirname($realJsFile) . "</b> folder. Error ", E_USER_ERROR);
			}
			require("xajaxCompress.php");
			$javaScript = implode('', file($srcFile));
			$compressedScript = xajaxCompressJavascript($javaScript);
			$fH = @fopen($realJsFile, "w");
			if (!$fH) {
				trigger_error("The xajax compressed javascript file could not be written in the <b>" . dirname($realJsFile) . "</b> folder. Error ", E_USER_ERROR);
			}
			else {
				fwrite($fH, $compressedScript);
				fclose($fH);
			}
		}
	}
	// _detectURL() returns the current URL based upon the SERVER vars
	// used internally
	function _detectURI() {
		$aURL = array();