// Hintergrundfarbenwechsel
function setFldIn(obj)
{
	obj.style.background = '#FEFAE4';
}

function setFldOut(obj)
{ 
	obj.style.background = '#ffffff';
}

function setFldOutCheckbox(obj)
{ 
	obj.style.background = 'transparent';
}

// String-Operationen
function trim(str, chars) 
{
    return ltrim(rtrim(str, chars), chars);
}

function ltrim(str, chars) 
{
    chars = chars || "\\s";
    return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}

function rtrim(str, chars) 
{
    chars = chars || "\\s";
    return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}