function script1(checker) {
    
	var kilocost = document.getElementById("kilocost").value;
	var chess = document.getElementById(checker).value; 
	
	if (isNaN(chess))return false;
		//if the value is not a number, do nothing; 

	var largedec = chess * 720  * kilocost; 
	var answer = largedec.toFixed(2);
	document.getElementById("continuouslyrunanswer").style.color = 'red';
	document.getElementById("continuouslyrunanswer").innerHTML = answer;  
	}

function script2() {
    
	var kiloCost = document.getElementById("kilocost").value; 
	var kiloPerHour = document.getElementById('fewhours').value; 
	var howManyHours = document.getElementById('howmanyhours').value;
	
	if (isNaN(kiloPerHour))return false;
	if (isNaN(howManyHours)) return false;
		//if the value is not a number, do nothing;

	var largedec = kiloPerHour * howManyHours  * kiloCost * 30; 
	var answer = largedec.toFixed(2);
	
	document.getElementById("fewhoursanswer").style.color = 'red';
	document.getElementById("fewhoursanswer").innerHTML = answer;  
	}

function script3() {
    
	var kiloCost = document.getElementById("kilocost").value; 
	var kiloPerHour = document.getElementById('sporadicreading').value; 
	var howManyTimes = document.getElementById('sporadicuses').value;
	
	if (isNaN(kiloPerHour))return false;
	if (isNaN(howManyTimes)) return false;
		//if the value is not a number, do nothing;

	var largedec = kiloPerHour * howManyTimes  * kiloCost * 30; 
	var answer = largedec.toFixed(2);
	
	
	document.getElementById("sporadicanswer").style.color = 'red';
	document.getElementById("sporadicanswer").innerHTML = answer;  
	}
	
function sh(id) {

       var e = document.getElementById(id);
       if(e.style.display == 'block')
          e.style.display = 'none';
       else
          e.style.display = 'block';
	}