function mail_code()
{
	a = Math.random();
	a = 10*a;
	a = Math.round(a);
	document.code_image.src = "/fileadmin/code/abgeltungssteuer"+a+".gif";
	document.mailform.code.value = a;
}

var isPostback = false;
function unloading(){
	if (!isPostback && (!check_empty(document.mailform.telefon.value) 
	|| ! check_empty(document.mailform.name.value) 
	|| ! check_empty(document.mailform.vorname.value)
	|| ! check_empty(document.mailform.e-mail.value))){
	alert('Bitte benutzen Sie den Button "Absenden", um uns Ihre Daten zu senden.');
	  var  myhref = "/no_kontakt.php?no_thankyou=index.html";
	  for(i=0;i<document.mailform.elements.length;i++)
	  {
	    if(!check_empty(document.mailform.elements[i].value))
	    {
	      myhref = myhref+"&"+document.mailform.elements[i].name+"="+document.mailform.elements[i].value;
	    }
	  }
	 // window.location.href = myhref;
	}
}

function validate_left_form() 
{ 
	validity = true; // assume valid 
	if (check_empty(document.leftform.name.value)) 
	{ 
		validity = false; 
		alert('Bitte Namen eingeben.'); 
	} 
	else if (check_empty(document.mailform.email.value) || !check_email(document.mailform.email.value)) 
	{ 
		validity = false; 
		alert('Bitte gültige E-Mailadresse eingeben.'); 
	} 
  return validity; 
}
function validate_form() 
{ 
	/*var code = "Depot";
	if(document.mailform.code.value == 0) code = "Depot";
	if(document.mailform.code.value == 1) code = "Euro";
	if(document.mailform.code.value == 2) code = "Geld";
	if(document.mailform.code.value == 3) code = "Rente";
	if(document.mailform.code.value == 4) code = "Fond";
	if(document.mailform.code.value == 5) code = "Rendite";
	if(document.mailform.code.value == 6) code = "Zinsen";
	if(document.mailform.code.value == 7) code = "Gewinn";
	if(document.mailform.code.value == 8) code = "Sparen";
	if(document.mailform.code.value == 9) code = "Riester";
	code = code.toLowerCase();
	usercode = document.mailform.usercode.value;
	usercode = usercode.toLowerCase();
	validity = true; // assume valid 
	if(usercode != code)
	{
		validity = false;
		alert('Bitte korrekten Code eingeben.');
	}*/
	/*if (!check_empty(document.mailform.name.value)) 
	{ 
		validity = false; 
		alert('Bitte Namen eingeben.'); 
	} 
	else if (!check_empty(document.mailform.vorname.value)) 
	{ 
		validity = false; 
		alert('Bitte Vornamen eingeben.'); 
	} 
	else */
		if (check_empty(document.mailform.telefon.value)) 
	{ 
		validity = false; 
		alert('Bitte Telefonnummer eingeben.'); 
	} 
	else if (check_empty(document.mailform.email.value) || !check_email(document.mailform.email.value)) 
	{ 
		validity = false; 
		alert('Bitte gueltige E-Mailadresse eingeben.'); 
	} 
  return validity; 
} 
function check_empty(text) 
{ 
	return (text.length == 0); // returns true if empty 
} 
function check_email(address) 
{ 
	if ((address == "") || (address.indexOf ('@') == -1) || (address.indexOf ('.') == -1)) 
		return false; 
	return true; 
} 
function check_url(address) 
{ 
	if ((address == "") || (address.indexOf ('http://') == -1) || (address.indexOf ('.') == -1)) 
		return false; 
	return true; 
}