function updatetotals(){
     var etotal1=0;
     var etotal3=0;
     var etotal4=0;
     var dtotal1=0;
     var dtotal3=0;
     var dtotal4=0;
	 var i; 
     var boxcount=Number(document.getElementById('numogames').value);
     var exchange=Number(document.getElementById('exchangerate').value);
     var price1,price2,price3,price4,game,box,p1,p2,p3,p4,dt1,dt2,dt3,dt4;
     for(i=0;i<=boxcount;i++){
          game='game'+i;
          price1=game+'price1';
          price3=game+'price3';
          price4=game+'price4';
          box=document.getElementById(game);
          p1=document.getElementById(price1);
          p3=document.getElementById(price3);
          p4=document.getElementById(price4);
          if(box.checked==true){
               etotal1+=Number(p1.value);
               etotal3+=Number(p3.value);
               etotal4+=Number(p4.value);
          }
     }
               dt1=etotal1*exchange;
               dt3=etotal3*exchange;
               dt4=etotal4*exchange;
               dtotal1+=Number(dt1.toFixed(-1));
               dtotal3+=Number(dt3.toFixed(-1));
               dtotal4+=Number(dt4.toFixed(-1));
     document.getElementById('tot1').innerHTML="<b>"+etotal1+"&#8364;</b> <span class=beige>($"+dtotal1+")</span>";
     document.getElementById('tot3').innerHTML="<b>"+etotal3+"&#8364;</b> <span class=beige>($"+dtotal3+")</span>";
     document.getElementById('tot4').innerHTML="<b>"+etotal4+"&#8364;</b> <span class=beige>($"+dtotal4+")</span>";
     document.getElementById('etotal1').value=etotal1;
     document.getElementById('etotal3').value=etotal3;
     document.getElementById('etotal4').value=etotal4;
     document.getElementById('dtotal1').value=dtotal1;
     document.getElementById('dtotal3').value=dtotal3;
     document.getElementById('dtotal4').value=dtotal4;

}

function checkall(){
	var chkbox="game";
	var tempbox="";
	var i=0;
	var max=Number(document.getElementById('numogames').value);
	for(i=0;i<=max;i++){
		tempbox=chkbox+i;
		document.gameform[tempbox].checked = true;
	}
	document.getElementById('checkbutton').innerHTML='<a onclick="uncheckall();">Deselect All Games</a>';
	document.getElementById('chckbutton').innerHTML='<a onclick="uncheckall();">Deselect All Games</a>';
	updatetotals();
}
function uncheckall(){
	var chkbox="game";
	var tempbox="";
	var i=0;
	var max=Number(document.getElementById('numogames').value);
	for(i=0;i<=max;i++){
		tempbox=chkbox+i;
		document.gameform[tempbox].checked = false;
	}
	document.getElementById('checkbutton').innerHTML='<a onclick="checkall();">Select All Games</a>';
	document.getElementById('chckbutton').innerHTML='<a onclick="checkall();">Select All Games</a>';
	updatetotals();
}