function insRow(){
var d = document.getElementById('myTable');
	if(d.rows.length>1){
		var summa=eval(document.getElementById('prislabel').innerText + ' + ' + eval(document.getElementById('pris').value + ' * ' + document.getElementById('antal').value));
		document.getElementById('prislabel').innerText = summa;
		}else{
		document.getElementById('prislabel').innerText = eval(document.getElementById('pris').value + ' * ' + document.getElementById('antal').value);
	}
var x=document.getElementById('myTable').insertRow('last')
var c1=x.insertCell(0)
var c2=x.insertCell(1)
var c3=x.insertCell(2)
var c4=x.insertCell(3)
c1.innerHTML="<input id='artid' type='text' name='artid' style='padding:2px;border:0;border-bottom:1px dashed #ccc;border-right:1px solid #eaeaea;width:55px;'>"
c2.innerHTML="<input type='text' name='txt' style='padding:2px;border:0;border-bottom:1px dashed #ccc;border-right:1px solid #eaeaea;width:245px;' onblur='this.value=this.value.replace(',','.');'>"
c3.innerHTML="<input type='text' name='antal' style='padding:2px;border:0;border-bottom:1px dashed #ccc;border-right:1px solid #eaeaea;text-align:right;width:45px;' value='1'>"
c4.innerHTML="<input type='text' name='pris' value='0' style='padding:2px;border:0;border-bottom:1px dashed #ccc;text-align:right;width:45px;'>"
document.getElementById('artid').focus()

}
function delRow(){
	var d = document.getElementById('myTable');
		if(d.rows.length>1){
		var summa=eval(document.getElementById('prislabel').innerText + ' - ' + eval(document.getElementById('pris').value + ' * ' + document.getElementById('antal').value));
		document.getElementById('prislabel').innerText = summa;
			d.deleteRow(0);
			} else {
			alert('Du kan inte radera fler rader.');
		}
}