/****************************
    Formularüberprüfung
****************************/

function checkNumericField( field, caption, checkLength, minValue, maxValue ){
    if( checkLength ){
        checkFieldLength( field, caption, minValue, maxValue );
    }
    if( isNaN(document.getElementById(field).value) ){
        meldung += "Das Feld " + caption + " enthält keinen Zahlenwert.\n"
        ok = false;
    }
}
function checkTextField( field, caption, checkLength ){
    if( checkLength ){
        checkFieldLength( field, caption );
    }
}
function checkEmailField( field, caption, checkLength ){
    if( checkLength ){
        checkFieldLength( field, caption );
    }
    eMail = document.getElementById(field).value
    if( eMail != "" && (eMail.indexOf("@") == -1 ||
        eMail.slice(eMail.indexOf("@"), eMail.length).indexOf(".") == -1 ||
        eMail.slice(eMail.lastIndexOf(".") + 1 , eMail.length).length < 2 )
        ){
        meldung += "\"" + eMail + "\" ist keine gültige E-Mail-Adresse.\n"
        ok = false;
    }
}

function checkDropdownBox( field, caption ){
    if( document.getElementById(field).selectedIndex == 0 ){
        meldung += "Das Feld " + caption + " ist ein Pflichtfeld.\n"
        ok = false;
    }
}
function checkCheckbox( field, caption ){
    if( !document.getElementById(field).checked ){
        meldung += caption + " \n"
        ok = false;
    }
}
function checkTextarea( field, caption, checkLength ){
    if( document.getElementById(field).value == ""){
        meldung += caption;
        ok = false;
    }
}
function checkDateField( field, caption, checkLength ){
    if( checkLength ){
        checkFieldLength( field, caption );
    }
    dateField = document.getElementById(field).value
    if( dateField != "" && ( dateField.length < 10 || dateField.split(".").length <= 2 )){
        meldung += caption + " ist kein gültiges Datum (TT.MM.JJJJ) \n"
    }
}
function checkFieldLength( field, caption, minValue, maxValue ){
    if( document.getElementById(field).value == ""){
        meldung += "Das Feld " + caption + " ist ein Pflichtfeld.\n"
        ok = false;
    }
    if( document.getElementById(field).value != "" && minValue != "" ){
        if( (document.getElementById(field).value).length < minValue || (document.getElementById(field).value).length > maxValue){
            meldung += "Die " + caption + " darf nur " + minValue + " bis " + maxValue + " Zahlen enthalten!\n";
            ok = false;
        }
    }
}
function openEnlarge( what ){
    window.open("cmsadmin/includes/enlarge.php?image=" + what,"enlarge","toolbar=0,location=0,status=0,menubar=0,scrollbars=0,resizable=0,width=400,height=220")
}

function checkVote(pollID){

	found = false;
	var tag = document.getElementsByTagName('input')
	for(x=0; x<tag.length; x++){
		if( tag[x].getAttribute("name") == "answ" + pollID){
			if( tag[x].checked ){
				found = true;
			}
		}
	}

	if( found ){
		document.getElementById("poll" + pollID).submit();
	}else{
		alert('Bitte Auswahl treffen!');
	}
}