function ReplaceType(){
    var input = document.getElementById('pass');
    
    if(input.type == 'text'){
	    document.getElementById("passDiv").innerHTML = "<input type='password' id='pass' name='pass' onblur='ReplaceType();' />";
	    window.setTimeout("document.getElementById('pass').focus()", 1);
    } else if(input.value == ""){
	    document.getElementById("passDiv").innerHTML = "<input type='text' id='pass' value='Passwort' onfocus='ReplaceType();' />";
    }
}