var strCxValue = "013419846181161865280:0pescuil2wk";
var strFormID = "searchbox_" + strCxValue;
var strSearchAdd = " more:www.bibliotheksportal.de";

function add_s(bitDir) {
    var objFeld = document.getElementById(strFormID).q;
    var arrFeldValue = ("" + objFeld.value).split(strSearchAdd);
    var objFeld_bitDir = document.getElementById(strFormID).add_s_value;
	
	if (bitDir) {
		objFeld_bitDir.value = bitDir;
	} else {
		if (objFeld_bitDir.value == "n") {
			objFeld.value = arrFeldValue.join("");
			//objFeld.value = "testo";
			if (objFeld.value == "") {
				document.getElementById(strFormID).sa[1].style.display = "none";
			}
		} else {
			//alert(arrFeldValue.length);
			objFeld.value = arrFeldValue.join("") + ((arrFeldValue.length <= 2) ? strSearchAdd : "");
		}
	}
}