function getElementsByAttribute(oElm, strTagName, strAttributeName, strAttributeValue){
    var arrElements = (strTagName == "*" && document.all)? document.all : oElm.getElementsByTagName(strTagName);
    var arrReturnElements = new Array();
    var oAttributeValue = (typeof strAttributeValue != "undefined")? new RegExp("(^|\\s)" + strAttributeValue + "(\\s|$)") : null;
    var oCurrent;
    var oAttribute;
    for(var i=0; i<arrElements.length; i++){
        oCurrent = arrElements[i];
        oAttribute = oCurrent.getAttribute(strAttributeName);
        if(typeof oAttribute == "string" && oAttribute.length > 0){
            if(typeof strAttributeValue == "undefined" || (oAttributeValue && oAttributeValue.test(oAttribute))){
                arrReturnElements.push(oCurrent);
            }
        }
    }
    return arrReturnElements;
}
function selbstabholung()
{
if(getElementsByAttribute(document,"td","class","SeparateColumn")[1].getElementsByTagName("a")[0].href.search(/mieten/)!=-1){
getElementsByAttribute(document,"option","value","12315476")[0].setAttribute('disabled','disabled');
getElementsByAttribute(document,"option","value","7801125")[0].setAttribute('disabled','disabled');
getElementsByAttribute(document,"option","value","8980066")[0].setAttribute('disabled','disabled');
getElementsByAttribute(document,"option","value","7801128")[0].setAttribute('selected','selected');
getElementsByAttribute(document,"option","value","8980109")[0].setAttribute('disabled','disabled');
getElementsByAttribute(document,"option","value","18931613")[0].setAttribute('disabled','disabled');
getElementsByAttribute(document,"option","value","18934236")[0].setAttribute('disabled','disabled');
getElementsByAttribute(document,"option","value","20720381")[0].setAttribute('disabled','disabled');
	var c=document.createElement("option");
	c.value="7801132";
	c.appendChild(document.createTextNode("Barzahlung"));
	document.getElementsByName("PaymentMethod")[0].appendChild(c);
	}
}

function gutschein()
{
if(getElementsByAttribute(document,"td","class","SeparateColumn")[1].getElementsByTagName("a")[0].href.search(/Gutschein/)!=-1){
getElementsByAttribute(document,"option","value","12315476")[0].setAttribute('disabled','disabled');
getElementsByAttribute(document,"option","value","7801125")[0].setAttribute('disabled','disabled');
getElementsByAttribute(document,"option","value","8980066")[0].setAttribute('disabled','disabled');
getElementsByAttribute(document,"option","value","7801128")[0].setAttribute('disabled','disabled');
getElementsByAttribute(document,"option","value","18931613")[0].setAttribute('disabled','disabled');
getElementsByAttribute(document,"option","value","18934236")[0].setAttribute('disabled','disabled');
getElementsByAttribute(document,"option","value","8980109")[0].setAttribute('disabled','disabled');
getElementsByAttribute(document,"option","value","20720381")[0].setAttribute('selected','selected');
	}
else {
getElementsByAttribute(document,"option","value","20720381")[0].parentNode.removeChild(getElementsByAttribute(document,"option","value","20720381")[0]);
}

}