function validateBmrForm(c_weight, c_height, c_age)
{
	if(c_height.value=='' || isNaN(c_height.value))
	{
		alert('invalid height');
		return false;
	}

	if(c_weight.value=='' || isNaN(c_weight.value))
	{
		alert('invalid weight ');
		return false;
	}

	if(c_age.value=='' || isNaN(c_age.value))
	{
		alert('invalid age');
		return false;
	}
	return true;
}
function calculateMBR()
{
	var c_genderm = document.getElementById('genderM');
	var c_genderf = document.getElementById('genderF');
	var c_height = document.getElementById('height');
	var c_weight = document.getElementById('weight');
	var c_age = document.getElementById('age');

	if(validateBmrForm(c_height, c_weight, c_age)==true)
		return true;
	else
		return false
}



function getBMR()
{
	var c_genderm = document.getElementById('genderM');
	var c_genderf = document.getElementById('genderF');
	var c_height = document.getElementById('height');
	var c_weight = document.getElementById('weight');
	var c_age = document.getElementById('age');

	if(validateBmrForm(c_height, c_weight, c_age)==true)
	{
		var url = "calc.php";
		var pars = 'action=getBMR&gender=' + document.query.gender.value + '&height=' + c_height + '&weight=' + c_weight + '&age=' + c_age;

		var myAjax = new Ajax.Request(
			 url,
			 {
					method: 'post',
					parameters: pars,
					onComplete: changeLeadResponse
			 });
	}
}

function getBMRResponse(response)
{
	var jsonRes = eval('(' + response.responseText + ')');
	document.getElementById('calllink').innerHTML = "<a href='#' OnClick='javascript:startCallForLead()'>Start Call</a>";
}