function calculate_weight(){var b="";if(document.weightcalc_form.feet.options[document.weightcalc_form.feet.selectedIndex].value==""||document.weightcalc_form.inches.options[document.weightcalc_form.inches.selectedIndex].value==""){b+="Oops! You forgot to enter your height.\n\r"}if(document.weightcalc_form.pounds.value==""||document.weightcalc_form.pounds.value=="pounds"){b+="Oops! You forgot to tell us your pre-pregnancy weight."}if(b!=""){alert(b);return false}document.getElementById("calculator_header").style.display="none";document.getElementById("calculator_self").style.display="none";document.getElementById("calculator_result").style.display="block";document.getElementById("calculator_img_self").src="/images/calculators/scale_broken.jpg";var a=Number(document.weightcalc_form.feet.options[document.weightcalc_form.feet.selectedIndex].value)*12;a+=Number(document.weightcalc_form.inches.options[document.weightcalc_form.inches.selectedIndex].value);var d=Number(document.weightcalc_form.pounds.value);var c=(d/(a*a))*703.0696;c=c.toFixed(1);if(document.getElementById("twins").checked){document.getElementById("twinslink").innerHTML='<a href="http://www.parentsconnect.com/home/search.jhtml?searchtype=qA2Form&sorttype=default&searchkeywords=false&searchsubcategories=false&searchcategoryalias=&searchcategories=&ignoreterm=&overridecategory=&searchterm=twins" class="calc_link">Get expert advice on expecting twins and multiples</a>';document.getElementById("calculator_result_breakdown").style.display="none";if(c<18.5){document.getElementById("calculator_result_sum").innerHTML="33-45 pounds"}else{if(c<25){document.getElementById("calculator_result_sum").innerHTML="30-40 pounds"}else{if(c<30){document.getElementById("calculator_result_sum").innerHTML="20-30 pounds"}else{document.getElementById("approx").innerHTML="";document.getElementById("calculator_result_sum").innerHTML="at least 20 pounds"}}}}else{if(c<18.5){document.getElementById("calculator_result_sum").innerHTML="28-40 pounds"}else{if(c<25){document.getElementById("calculator_result_sum").innerHTML="25-35 pounds"}else{if(c<30){document.getElementById("calculator_result_sum").innerHTML="15-25 pounds"}else{document.getElementById("approx").innerHTML="";document.getElementById("calculator_result_sum").innerHTML="at least 15 pounds"}}}}return false};