function vorschau_mittel(key,bild,bildtext)
{
	var domain = document.URL.substring(0, document.URL.lastIndexOf("/"));
	var uri = domain + '/index.php?seite=vorschau+mittel&seitenart=Modul'
	+ '&autowert=' + key + '&bild=' + bild + '&bildtext=' + bildtext;
	cmx_load_ajaxuri(uri, 'vorschau_mittel');
}

function vorschau_chart(key)
{
	var domain = document.URL.substring(0, document.URL.lastIndexOf("/"));
	var uri = domain + '/index.php?seite=vorschau+mittel+chart&seitenart=Modul' + '&autowert=' + key;
	cmx_load_ajaxuri(uri, 'vorschau_mittel');
}

function calcbrutto()
{
	var mwst = document.getElementById("mwst");
  	for(i = 0; i < mwst.length; ++i)
  	{
	    if(mwst.options[i].selected == true)
	    {
	    	var m = mwst.options[i].text;
	    }
  	}

	var price = document.getElementById("price").value;
	price = price.replace(",",".");
	var calc = document.getElementById("calc");
	var val = price * (1 + m / 100);
	val = Math.ceil(100 * val) / 100;
	calc.innerHTML = "Preis brutto: " + val + " €";
}

function MaxStringlength(area,maxlen)
{
	var left = maxlen - parseInt(area.value.length);
	if(left < 0)
	{
		left = 0;
		area.value = area.value.substring(0,maxlen);
	}
	var str = left + " Zeichen verbleiben."
	document.getElementById("maxchars").innerHTML = str;
}