function formcheck(form,button){
	if(!(form.Sex[0].checked||form.Sex[1].checked))
		{alert("Please select gender.");return false;}
	if(form.parm2.value<=0)
		{alert("Please enter your weight.");return false;}
	if(form.parm0.selectedIndex==0||form.parm1.selectedIndex==0)
		{alert("Please enter your height.");return false;}
	form.submit();
	return true;
}