function setfocus(formNum, elementNum) {
	if (document.forms.length > 0) {
	document.forms[formNum].elements[elementNum].focus()
	} 
}

document.onkeypress = Tastendruck;

function Tastendruck (Ereignis) 
{
	if (!Ereignis)
	Ereignis = window.event;
	if(Ereignis.keyCode == 13)
	{
		getSalt("login","username","password","hash",getXhr());
	}
}