function chkFormular (lang) {
  if(lang == 'de'){
	  if (!document.disclaim_de.accept_de.checked) {
	    alert("Sie muessen die Bedingungen akzeptieren!");
	    document.disclaim_de.accept_de.focus();
	    //location.reload();
	    return false;
	  }
	}
	else {
	  if (!document.disclaim_en.accept_en.checked) {
	    alert("You have to accept the conditions!");
	    document.disclaim_en.accept_en.focus();
	    return false;
	  }
	}
	document.location.href="download.htm";
}