//Written by Manuel Villanueva 5/11/06
function tempFC(form) {temp=form.temp.value;if((temp==null)||(temp=="")||(isNaN(temp))){form.answer.value="?";form.show.value="?";alert('Please enter a temperature with numbers only. Use a period for decimal place.');form.temp.focus();form.temp.select();return false;}if  (form.choice[0].checked){var answer= temp * 9 / 5 + 32;var round=Math.round(10*answer)/10;var text1="°C = ";var text2="°F";var text3="°C multiplied by 9/5 +32 = ";var text4="°F";form.answer.value=temp + text1 + round + text2;form.show.value= temp+ text3 + round + text4;}if (form.choice[1].checked){var answer= (temp - 32) * 5 / 9;var round=Math.round(10*answer)/10;text0="(";text1="°F = ";text2="°C";text3="°F - 32) multiplied by 5/9 = ";text4="°C";form.answer.value=temp + text1 + round + text2;form.show.value= text0 + temp + text3 + round + text4;}}