<!-- TWO STEPS TO INSTALL : 1. Add the last code into the BODY of your HTML document --> <p align="center"><strong>Taschenrechner</strong></p> <form> <center> <table border=2 cellpadding=3 bgcolor=#E6E9EA><tr><td> <center><b>Enter 2 Numbers:</b><br> <input type=text size=5 name=num1> <input type=text size=5 name=num2></center></tr></td><tr><td> <center><b>Click on a Function</b><br> <input type=button name=a1 value=" + " onclick="addFields(this.form)"> <input type=button name=a2 value=" - " onclick="subFields(this.form)"> <input type=button name=a3 value=" x " onclick="mulFields(this.form)"> <input type=button name=a4 value=" / " onclick="divFields(this.form)"></center> </td></tr><tr><td> <center><B>the Answer is:</B><br> <input type="text" size=8 name="result"></center></td></tr><tr><td> <center><input type=reset name=clear value="clear fields"></center></td></tr></table> </form> </td></table> </center> <script language="javascript"> <!-- function addFields(form) { var sum = eval(form.num1.value) + eval(form.num2.value) form.result.value=sum } function subFields(form) { var sub = eval(form.num1.value) - eval(form.num2.value) form.result.value=sub } function mulFields(form){ var mul = eval(form.num1.value) * eval(form.num2.value) form.result.value=mul } // notice that the var ??? was not really needed, something new i learned as i discover the world of javascript function divFields(form) { form.result.value = eval(form.num1.value) / eval(form.num2.value) } //--> </script> <!-- Script Size: ? KB --> </font>