var s_carats = '9,10,14,15,18,22,24,950 Platinum,999 Platinum';
var s_prices = '7.9885316184352,8.8619444087174,12.419503822794,13.314219364059,15.97706323687,19.513319899964,21.281448231511,17.660301446945,18.403893086817';
   carats = s_carats.split(',');
   prices = s_prices.split(',');
	
 
function get_gold_price(form_name){

selected_index = document.forms[form_name].carat.selectedIndex;
weight = document.forms[form_name].weight.value;

if (weight>0){
if(form_name != 'calculate_form')
price = (selected_index == 0) ? '' : prices[selected_index-1]*weight;
else
price = prices[selected_index]*weight;

if(price==='') price = 0;
price = price.toFixed(2);
// price = "Value = "+price;
}else{
price = "0.00";
}
document.forms[form_name].price.value = price;
//if(weight) document.forms[form_name].price.value = price;
}