function promptSearch (thisform, thisfield) {
var elnum = parseInt(-1);
var k = parseInt(-1);
for (var j = 0; j < document.forms[thisform].elements.length; j++) {
if (document.forms[thisform].elements[j].name == thisfield) {
elnum = j;
break;
   }
}
var myvar = "";
var srch = "";
var menuLength = "";
menuLength = eval("document." + thisform + "." + thisfield + ".length");
srch = prompt("Pesquisar por:", "");
if (srch ) {
	srch = srch.toUpperCase();
	var found=false;
	for (var i = 0; i < menuLength; i++) {
		myvar = eval("document." + thisform + "." + thisfield + ".options[" + i + "].text.toUpperCase()");
		if (myvar==srch) {
			document.forms[thisform].elements[elnum].options[i].selected = true;
			found=true;
			break;
    }
  }
  if (found==false) {
		for (var i = 0; i < menuLength; i++) {
			myvar = eval("document." + thisform + "." + thisfield + ".options[" + i + "].text.toUpperCase()");
			if (myvar.indexOf(srch) >= 0) {
				document.forms[thisform].elements[elnum].options[i].selected = true;
				break;
  	  }
  	}
  }
}
return false;
}