function calc(param)
	{
	if (document.con.display2.value>="11")					//resets on third press
		{
		document.con.display2.value=""
		}


	if (document.con.display2.value=="1")
		{
		output2=document.con.display2.value+"1";
		document.con.display3.value=document.con.display4.value;
		document.con.display4.value=param;
		}
	else
		{
		output2=document.con.display2.value+"1";
		document.con.display3.value="0";
		document.con.display4.value=param;
		}


	document.con.display2.value=output2;

	var no1=document.con.display4.value;
	zeige1(no1);

	var no2=document.con.display3.value;
	zeige2(no2);

	if (document.con.display3.value=="0")
		{
		zeige2(0);
		}
	}	

var erg
function go()				//calculates+11
	{
	document.con.display2.value=document.con.display2.value+"11";
	}


function set(a)
	{
	document.con.display2.value="11";
	document.con.display3.value="-";
	document.con.display4.value=a;
	zeige2(10);
	zeige1(a);
	//totv();
	}

function setn(a,b)
	{
	calc(a);
	calc(b);
	totv();
	}

function totv()
	{
	location.href='wir.html#tv';
	}

function totvm()
	{
	location.href='wirm.html#tv';
	}

var namen=new Array("numbers/0.gif","numbers/1.gif","numbers/2.gif","numbers/3.gif","numbers/4.gif","numbers/5.gif","numbers/6.gif","numbers/7.gif","numbers/8.gif","numbers/9.gif","numbers/-.gif");

var bilder=new Array();

function lade()
	{
	  var i;
	  for (i=0;i<12;i++)
	  {
	  bilder[i]=new Image();
	  bilder[i].src=namen[i];
	  }
	}

function zeige1(nr)
	{
	document.dis2.src=bilder[nr].src;
	}

function zeige2(nr)
	{
	document.dis1.src=bilder[nr].src;
	}

//-----------------test-alert------------------------------
function hop()
{alert("hop!")};