/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
// XML Objekt

var XMLHTTP = null;
var sElementToReplace = "";
var bShowWait = true;

if ( window.XMLHttpRequest ) {
	XMLHTTP = new XMLHttpRequest( );
}
else if ( window.ActiveXObject ) {
	try {
		XMLHTTP = new ActiveXObject( "Msxml2.XMLHTTP" );
	}
	catch ( ex ) {
		try {
			XMLHTTP = new ActiveXObject( "Microsoft.XMLHTTP" );
		}
		catch ( ex ) {
		}
	}
}


/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
// In Element externe Daten nachladen

var bAjaxRequestRunning = false;

function ajax_GetDataVia( spiElementToReplace, spiURL, spiParam, bpiSendViaPost, bpiReplace ) {
	if ( bAjaxRequestRunning == false ) {
		var sParam = null;
		var sSendVia = "GET";
		bAjaxRequestRunning = true;
		sElementToReplace = spiElementToReplace;

		if ( bpiSendViaPost ) {
			sSendVia = "POST";
		}

		if ( spiParam.length > 0 ) {
			if( bpiSendViaPost ) { sParam = spiParam; }
			else { spiURL = spiURL + "?" + spiParam; }
		}

		x_ajax_Wait( );
		XMLHTTP.open( sSendVia, spiURL );
		if ( bpiSendViaPost ) { XMLHTTP.setRequestHeader( "Content-Type", "application/x-www-form-urlencoded" ); }
		if ( bpiReplace ) { XMLHTTP.onreadystatechange = x_ajax_AreaReplace; }
		else { XMLHTTP.onreadystatechange = x_ajax_AreaAddAfter; }
		XMLHTTP.send( sParam );
	}
	else {
		alert( 'Request currently running...' );
	}
}

function ajax_LoadContent( spiElementToReplace, spiURL ) {
	var nPos = spiURL.indexOf( "?" );
	if ( nPos > 0 ) {
		var sURL = spiURL.substr( 0, nPos );
		var sParam = spiURL.substr( nPos + 1, spiURL.length );
	}
	else {
		var sURL = spiURL;
		var sParam = "";
	}
	ajax_GetDataVia( spiElementToReplace, sURL, sParam, false, true );
}

function x_ajax_AreaReplace( ) {
	if ( XMLHTTP.readyState == 4 ) {
		var objHTML = document.getElementById( sElementToReplace );
		objHTML.innerHTML = XMLHTTP.responseText;
		bAjaxRequestRunning = false;
	}
}

function x_ajax_AreaAddAfter( ) {
	if ( XMLHTTP.readyState == 4 ) {
		var objHTML = document.getElementById( sElementToReplace );
		objHTML.innerHTML += XMLHTTP.responseText;
		bAjaxRequestRunning = false;
	}
}

function ajax_WaitImg( bpiSwitch ) {
	if ( bpiSwitch ) {
		bShowWait = true;
	}
	else {
		bShowWait = false;
	}
}

function x_ajax_Wait( ) {
	if ( bShowWait ) {
		var objHTML = document.getElementById( sElementToReplace );
		objHTML.innerHTML = "<center><img src='images/wait_ajax.gif' alt='wait...'></center>";
	}
	else {
		bShowWait = true;
	}
}


/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
// Live Search

var sLSElement = '';
var sLSElementResult = '';
var bLSBrowserIE = false;
var sLSUrl = '';
var sLSParam = '';
var sLSLastQuery = '';
var bLSStyleIsSet = false;
var objLSHideTimer = null;

function ajax_livesearch_init( spiElementInput, spiElementResult, spiURL, spiParam ) {
	sLSElement = spiElementInput;
	sLSElementResult = spiElementResult;
	sLSUrl = spiURL;
	sLSParam = spiParam;

	// add EventListener to element
	if ( navigator.userAgent.indexOf( 'Safari' ) > 0 ) {
		document.getElementById( sLSElement ).addEventListener( 'keydown', x_ajax_livesearch_event, false );
	} else if ( navigator.product == 'Gecko' ) {
		document.getElementById( sLSElement ).addEventListener( 'keypress', x_ajax_livesearch_event, false );
		document.getElementById( sLSElement ).addEventListener( 'blur', x_ajax_livesearch_event, false );
	} else {
		document.getElementById( sLSElement ).attachEvent( 'onkeydown', x_ajax_livesearch_event );
		bLSBrowserIE = true;
	}

	x_ajax_livesearch_set_style( );
	x_ajax_livesearch_timer( );
}

function x_ajax_livesearch_event( event ) {
	// perform action on event

	if (event.keyCode == 40 ) {
		//KEY DOWN
		highlight = document.getElementById("livesearchHighlight");
		if (!highlight) {
			highlight = document.getElementById("returndresult").firstChild;
		} else {
			highlight.removeAttribute("id");
			highlight.style.backgroundColor = "transparent";
			highlight = highlight.nextSibling;
		}
		if (highlight) {
			highlight.style.backgroundColor = "#abcdef";
			highlight.setAttribute("id","livesearchHighlight");
		} 
	} 
	else if (event.keyCode == 38) {
		//KEY UP
		highlight = document.getElementById("livesearchHighlight");
		if (!highlight) {
			highlight = document.getElementById("returndresult").lastChild.previousSibling;
		}
		else {
			highlight.removeAttribute("id");
			highlight.style.backgroundColor = "transparent";
			highlight = highlight.previousSibling;
		}
		if (highlight) {
			highlight.style.backgroundColor = "#abcdef";
			highlight.setAttribute("id","livesearchHighlight");
		}
	}
	else if (event.keyCode == 27) {
		//ESC
		x_ajax_livesearch_hide_element( );
	}
	else if (event.keyCode == 13) {
		//Submit
		var objElement = document.getElementById( sLSElement );
		var highlight = document.getElementById("livesearchHighlight");

		if ( highlight.value != '' ) {
			objElement.value = highlight.getAttribute("title");
			sLSLastQuery = objElement.value;
			x_ajax_livesearch_hide_element( );
//			pause( 1 );
		}

		return true;
	}

	x_ajax_livesearch_hide( );
}

function x_ajax_livesearch_timer( ) {
	// check every x seconds on new input
	window.setTimeout( "x_ajax_livesearch_search( )", 500 );
}

function x_ajax_livesearch_search( ) {
	var objElement = document.getElementById( sLSElement );

	x_ajax_livesearch_timer( );

	if ( objElement.value != sLSLastQuery && objElement.value != '' ) {
		var objElementResult = document.getElementById( sLSElementResult );
		sLSLastQuery = objElement.value;

		// abort current transaction if unsuccessful
		if ( XMLHTTP && XMLHTTP.readyState < 4 ) {
			XMLHTTP.abort( );
		}
		ajax_LoadContent( sLSElementResult, sLSUrl + '?' + sLSParam + '=' + sLSLastQuery );
		objElementResult.style.display = "block";
		x_ajax_livesearch_hide( );
	}
	else if ( objElement.value == '' ) {
		sLSLastQuery = '';
		x_ajax_livesearch_hide_element( );
	}
}

function x_ajax_livesearch_hide( ) {
	// destroy timer for hiding
	if ( objLSHideTimer ) {
		window.clearTimeout( objLSHideTimer );
	}

	objLSHideTimer = window.setTimeout( "x_ajax_livesearch_hide_element( )", 10000 );
}
	
function x_ajax_livesearch_hide_element( ) {
	var highlight = document.getElementById("livesearchHighlight");
	if ( highlight ) {
		highlight.removeAttribute("id");
		highlight.style.backgroundColor = "transparent";
	}

	document.getElementById( sLSElementResult ).style.display = "none";
}

function x_ajax_livesearch_set_style( ) {
	var objElementResult = document.getElementById( sLSElementResult );
	if( !bLSStyleIsSet ) {
		document.getElementById(sLSElement).setAttribute("autocomplete","off");
		objElementResult.style.border = "1px solid #999";
		objElementResult.style.width = "240px";
		objElementResult.style.padding = "0 8px";
		objElementResult.style.backgroundColor = "#FFF";
		objElementResult.style.fontFamily = "arial";
		objElementResult.style.marginTop = "2px";
		objElementResult.style.textAlign = "left";
		objElementResult.style.zIndex = "2";
		bLSStyleIsSet = true;
	}
}


/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
// Form submit

function ajax_SubmitForm( spiParentElement, spiElementToReplace, spiURL, spiParam, spiHideElementAfterSubmit ) {
	var sParam = sGetElementValues( spiParentElement );

	if( spiHideElementAfterSubmit.length > 0 ) {
		document.getElementById( spiHideElementAfterSubmit ).style.display = "none";
	}

	if( spiParam.length > 0 ) {
		spiParam += '&';
	}
	else {
		spiParam = '';
	}

	ajax_LoadContent( spiElementToReplace, spiURL + '?' + spiParam + sParam );
}

function sGetElementValues( spiParentElement ) {
	var sParam = new Array( );
	sParam[0] = '';

	sParam[1] = sGetValuesFromElements( spiParentElement, 'input' );
	sParam[2] = sGetValuesFromElements( spiParentElement, 'textarea' );

	for( i=1; i < sParam.length; i++ ) {
		if( sParam[0].length > 0 && sParam[i].length > 0 ) {
			sParam[0] += '&';
		}

		sParam[0] += sParam[i];
	}
	return sParam[0];
}

function sGetValuesFromElements( spiParent, spiHTMLElement ) {
	var sParam = '';
	var nCount = 0;
	var objaSubitems = document.getElementById( spiParent ).getElementsByTagName( spiHTMLElement );

	for (nCount=0; nCount < objaSubitems.length; nCount++) {
		if ( sParam.length > 0 ) {
			sParam += '&';
		}
		sParam += objaSubitems[nCount].name + '=' + sGetUrlText( objaSubitems[nCount].value );
	}

	return sParam;
}

function sGetUrlText ( spiText ) {
	// Replaces all bad characters in text with good chars: ' ' -> '%20'
	
	var sNewText = spiText;

	sNewText = sNewText.replace( ' ', '%20' );

	return sNewText;
}