function calculateRMR(){
	weight = document.getElementById("RMRWeight").value;
	hfeet = document.getElementById("RMRHeightFeet").value;
	hinches = document.getElementById("RMRHeightInches").value;
	age = document.getElementById("RMRAge").value;
	if(isNaN(weight)){
		weight = 0;
		document.getElementById("RMRWeight").value = "";
	}
	if(isNaN(age)){
		age = 0;
		document.getElementById("RMRAge").value = "";
	}
	//convert to metric
	weight = weight/2.2045432760;
	height = eval( hfeet*12 + hinches*1 ) * 2.54;
	//female
	RMRf = eval( 655+(9.6*weight)+(1.8*height)-(4.7*age) );
	RMRf = Math.round(RMRf)
	//male
	RMRm = eval( 66+(13.7*weight)+(5*height)-(6.8*age) );
	RMRm = Math.round(RMRm)
	
	if(RMRm>0){
		document.getElementById("RMRresults").style.display = "";
		document.getElementById("RMRMresults").innerHTML = RMRm;
		document.getElementById("RMRFresults").innerHTML = RMRf;
	}
}