[Mapserver-users] Problem with access jBox's methods from javascripts functions.

Tue Nov 25 12:23:09 EST 2003

I have next problem:

1.  Template: 

<html>
<head>
  ....................
  <script language="javascript" src="/interface_sig/javascript/sig.js"></script>
</head>
<body>
  ...........
  <img name="zoomin" src="/interface_sig/imagenes/zoomin_nopres.png" onClick="clickboton(this); document.jBox.boxon();">
  <img name="pan" src="/interface_sig/imagenes/pan_nopres.png" onClick="clickboton(this); document.jBox.dragon();">
  <img name="zoomout" src="/interface_sig/imagenes/zoomout_nopres.png" onClick="clickboton(this); document.jBox.boxoff();">
  <img name="medir" src="/interface_sig/imagenes/medir_nopres.png" onClick="clickboton(this); document.jBox.lineon();">
   ..........
    <form method="GET" name="mapserv" action="/cgi-bin/mapserv">
    .........
    <applet codebase="/interface_sig/jBox" code="jBoxPNG.class" width="578" height="305" name="jBox" MAYSCRIPT>
	  <param name="image" value="http://[host][img]">
    </applet>
    ...................
</body>
</html>

2. File sig.js 

....
	function clickboton(objeto) {
		activo.src = base + activo.name + '_nopres.png';
		activo = objeto;
		objeto.src = base + objeto.name + '_pres.png';
		switch (activo.name) {
			case 	'info'		:
						map_obj.modo = 'nquery';
						break;
			case	'zoomin'	:
						map_obj.modo = 'browse';
						map_obj.zoomdir = '1';
						break;
			case	'pan'		:
						map_obj.modo = 'browse';
						map_obj.zoomdir = '0';
						break;
			case	'zoomout'	:
						map_obj.modo = 'browse';
						map_obj.zoomdir = '-1';
		}
	}
.......

This way all it's Ok, access jBox's methods work fine, but i want to use only function "clickboton()" at event onClick and try:

1.  Supress in the img tag,  jBox method:

 <img name="zoomin" src="/interface_sig/imagenes/zoomin_nopres.png" onClick="clickboton(this)">

2.  Add in file sig.js on function clickboton(): 

....
	function clickboton(objeto) {
		activo.src = base + activo.name + '_nopres.png';
		activo = objeto;
		objeto.src = base + objeto.name + '_pres.png';
		switch (activo.name) {
			case 	'info'		:
						document.jBox.boxon();
						map_obj.modo = 'nquery';
						break;
			case	'zoomin'	:
						document.jBox.boxon();
						map_obj.modo = 'browse';
						map_obj.zoomdir = '1';
						break;
			case	'pan'		:
						document.jBox.dragon();
						map_obj.modo = 'browse';
						map_obj.zoomdir = '0';
						break;
			case	'zoomout'	:
						document.jBox.boxoff();
						map_obj.modo = 'browse';
						map_obj.zoomdir = '-1';
		}
	}
.......

With these changes the page dosen't work.  The javascript debugger display this message: Exception ``TypeError: document.jBox.boxon is not a function'' thrown from function clickboton().

I treated other forms:

*  document.applet.jBox.boxon()
*  document.applets[0].boxon()

And nothing to do.

Any idea......

Thanks for your help......