function bildwechsel (id)
{
color1="#000000";
color2="#800080";
bild_bez="st_" + id;
with (window.document)
{
 doc_bild = images[bild_bez].src;
 if (doc_bild.lastIndexOf("_1") !== -1) {doc_bild = doc_bild.replace(/_1/, "_2");color=color2}
   else {doc_bild = doc_bild.replace(/_2/, "_1");color=color1;};

 images[bild_bez].src = doc_bild;
};
 if (document.all) {document.all[id].style.color=color;};
}

/*-----------------------------------------------------------------------------*/

function check_fields(formular)
{
 var leerfelder = new Array ("fahrzeugsuchform", "fahrzeugueberf", "carsearch", "cartransfer");
 leerfelder["fahrzeugsuchform"] = new Array("firma", "fax", "bem", "datum");
 leerfelder["fahrzeugueberf"] = new Array("ansprech", "fax", "ansprechto", "faxto", "bem", "datum");
 leerfelder["carsearch"] = leerfelder["fahrzeugsuchform"];
 leerfelder["cartransfer"] = leerfelder["fahrzeugueberf"];
 var message;

 var forms_obj = eval("document." + formular);
 if (formular.substr(0,3)=="car") message = "All marked fields must be filled in!"
 	else message = "Alle markierten Felder müssen ausgefüllt werden";
 for (i=0; i<forms_obj.elements.length; i++)
 	{
	 var allow_empty = false;
	 for (j in leerfelder[formular])
	 	{if (forms_obj.elements[i].name == leerfelder[formular][j]) {allow_empty = true; break;}};
	 if (forms_obj.elements[i].value == "" && !allow_empty)
 		{alert (message);
 		 forms_obj.elements[i].focus();
 		 return false;
 		};
 	};
 return true;
 }

/*-----------------------------------------------------------------------------*/

function test()
{
/* --------------------------------------------------------------
 var muster = /^[0-9]+$/;
 var field = "telefon";
 var feld = eval("document." + formular + "." + field);
 var testval = feld.value;
 test = muster.test(testval);
.method="post";
document.fahrzeugsuchform.action="<? echo $PHP_SELF ?>";
 if (!test) {alert ("Falsches Format im Feld " + field + "!!!");
				feld.value="neu123";
				feld.focus();
				feld.select();
				alert ("Sollte focus haben!");
				return false;
				}
 else {document.fahrzeugsuchform.method="post";
      document.fahrzeugsuchform.action="fahrzeug_suchauftrag_prt.php";
      };

--------------------------------------------------------------------*/
}