<script language="JavaScript"><!-- function CelsiusConverter(){ document.converter.fahrenheit.value = (document.converter.celsius.value * 9 / 5) + 32 document.converter.kelvin.value = document.converter.celsius.value * 1 + 273.15 } function FahrenheitConverter(){ document.converter.celsius.value = (document.converter.fahrenheit.value - 32) * 5 / 9 document.converter.kelvin.value=((document.converter.fahrenheit.value - 32)*5/9)+273.15 } function KelvinConverter(){ document.converter.celsius.value = document.converter.kelvin.value - 273.15 document.converter.fahrenheit.value=((document.converter.kelvin.value - 273.15)*9/5)+32 } //--></script><form name="converter">Celsius: &nbsp &nbsp &nbsp <input type="text" name="celsius" onChange="CelsiusConverter()"><br />Fahrenheit: <input type="text" name="fahrenheit" onChange="FahrenheitConverter()"><br />Kelvin: &nbsp &nbsp &nbsp &nbsp &nbsp<input type="text" name="kelvin" onChange="KelvinConverter()"><br /><input type="button" value="Convert!" /></form>