function tafla(){ byrja = 1*document.all['byrja'].value; enda = 1*document.all['enda'].value; bil = 1*document.all['bil'].value; start = bil/2; summa = 0.0; parent.frames['nedri'].document.close(); parent.frames['nedri'].document.writeln("<table>"); parent.frames['nedri'].document.write("<tr>"); parent.frames['nedri'].document.write("<td> <b>x</b> </td>"); parent.frames['nedri'].document.write("<td> <b>sin(<i>x</i>)</b> </td>"); parent.frames['nedri'].document.writeln("</tr>"); for (i = start; i<enda; i = i+bil){ parent.frames['nedri'].document.write("<tr>"); parent.frames['nedri'].document.write("<td>",i,"</td>"); parent.frames['nedri'].document.write("<td>",Math.sin(i),"</td>"); parent.frames['nedri'].document.writeln("</tr>"); summa = summa + Math.sin(i); } summa = summa * bil; parent.frames['nedri'].document.write("<tr>"); parent.frames['nedri'].document.write("<td><b>Samtals</b></td>"); parent.frames['nedri'].document.write("<td><b>",summa,"</b></td>"); parent.frames['nedri'].document.write("</tr>"); parent.frames['nedri'].document.write("</table>"); }