var imgDocId = true;
var oldImg = "default";
var allImages = new Array();

function preloadImages() {
	for ( var i = 0; i < imageNames.length; i++ ) {
		allImages[ imageNames[i] ] = new Image();
		allImages[ imageNames[i] ].src = "images/" + urlb + "/ng-" + imageNames[i] + ".gif";
	}
}

function show(id) {
	document.forms._DominoForm.gssuche.value=id;
	document.forms._DominoForm.ges.value="1";
	senden();
}

function swap(id, setOldImg) {
	obj = document.getElementById("imgNetzgebiet");
	if ( !id ) id = oldImg;
	if ( !allImages[id] || !obj ) return;
	if ( obj.src.indexOf(allImages[id].src) == -1 )
		obj.src = allImages[id].src;
	if( setOldImg && id) oldImg = id;
}
function showAnfahrt(src, width, height) {
	var h = (height ? (height > screen.height - 50 ? 444 : height + 20) : 444);
	var w = ( width ? width + 20 : 720 );
	window.open( document.getElementsByTagName("base")[0].href + src, "Anfahrtsskizze", "width=" + w + ",height=" + h);
}

function doNzKeyUp(event){
	if ( event.keyCode=="13" ) { 
		senden();
	}
}

function initNG() {
	preloadImages();
	document.forms._DominoForm.onsubmit = senden;
	document.forms._DominoForm.elements.gssuche.focus();
}

function senden() {
	objForm = document.forms[0];
	if ( objForm.elements["gssuche"].value=="" ) return false;
	if ( objForm.action.indexOf("&key=") < 0 ) objForm.action += ("&key=" + key);
	obj = objForm.elements["nzsuchelos"];
	obj.click();
	return true;
}