// JavaScript Document
function calculate()
{
	var membership_type=document.membership.membership_type.value;
	if(membership_type!="")
	{
		
		if(membership_type=="ordinary")
  		{
		 	var f=0;
			document.membership.memfee_ass.value="";
			document.membership.memfee_ass.disabled="true";
			f=document.membership.turnover.value;
			document.membership.memfee_ord.value=f;
			if(f!="")
			{
				f=f-(-2500);
				document.membership.tax.value=(f*10.3)/100;
				document.membership.total_fee.value=f-(-f*10.3/100);
			}
			else
			{
				alert("Please Select Turnover First");
			}
		}
		
		if(membership_type=="associate")
		{
			document.membership.memfee_ord.value="";
			document.membership.memfee_ord.disabled="true";
			document.membership.memfee_ass.value=5000;
			document.membership.tax.value=75*10.3;
			document.membership.total_fee.value=7500-(-75*10.3);
		}
		
	}
	
}