<div><p>function validateNumber(evt) {
  var theEvent = evt || window.event;
  var key = theEvent.keyCode || theEvent.which;
  if ((key &lt; 48 || key &gt; 57) &amp;&amp; !(key == 8 || key == 9 || key == 13 || key == 37 || key == 39 || key == 46) ){
    theEvent.returnValue = false;
    if (theEvent.preventDefault) theEvent.preventDefault();
  }
}

$(document).ready(function(){

   $('#menu-opt').click(function()
   {
	    $('#ul-menu').slideToggle('fast');
 });
 
 $('#ul-menu a').click(function()
   {
	$('#sel-val').html($(this).attr('title')) 	
    $('#ul-menu ').slideToggle('fast');
	$('.box').hide();
    $('#div' + $(this).attr('id')).show();
 });
 
 
});

function Calculate()
{
	var cigarettes = document.getElementById("txtsmoked").value;
	var pack =document.getElementById("txtquantity").value;
	var perpack =document.getElementById("txtprice").value;
	if (cigarettes == "")
	{
		$('input[id=txtsmoked]').addClass('redcolor');

	}
	else
	{
		$('input[id=txtsmoked]').removeClass('redcolor');
	}
	
	if (pack == "" || pack ==0.00)
	{
			$('input[id=txtquantity]').addClass('redcolor');

	}
	else
	{
		$('input[id=txtquantity]').removeClass('redcolor');
	}
	
	if (perpack == "")
	{
		$('input[id=txtprice]').addClass('redcolor');

	}
	else
	{
		$('input[id=txtprice]').removeClass('redcolor');
	}
	
	if(perpack == "" || pack == "" || cigarettes == "")
	{
	return false;
	}
	
	var daysaving =(cigarettes/pack)*perpack;
	var weaksaving =Math.round(daysaving*7);
	var monthsaving =Math.round(daysaving*30);
	var yearsaving =Math.round(daysaving*365);
	//alert(monthsaving);
	
	document.getElementById('result').innerHTML="</p><h3>Du vil spare:</h3><ul> <li> <b> kr</b><b>"+ weaksaving + "</b>per/uke </li> <li><b> kr</b><b>"+monthsaving+"</b>per/månde </li><li><b> kr</b><b>"+yearsaving+"</b>per/year</li></ul>";
	document.getElementById('trresult').style.display='block';
	document.getElementById('maindiv').style.display= 'none';
	return false;
}

function CalculateGrams()
{

	var cigarettes = document.getElementById("txtsmoked1").value;
	var pack =document.getElementById("txtquantity1").value;
	var perpack =document.getElementById("txtprice1").value;
	
	if (cigarettes == "")
	{   
		$('input[id=txtsmoked1]').addClass('redcolor');
		
	}
	else
	{
		$('input[id=txtsmoked1]').removeClass('redcolor');
	}
	
	if (pack == "" || pack ==0.00)
	{
			$('input[id=txtquantity1]').addClass('redcolor');
		    
	}
	else
	{
		$('input[id=txtquantity1]').removeClass('redcolor');
	}
	
	if (perpack == "")
	{
		$('input[id=txtprice1]').addClass('redcolor');
		   
	}
	else
	{
		$('input[id=txtprice1]').removeClass('redcolor');
	}
	
	if(perpack == "" || pack == "" || cigarettes == "" || pack ==0.00)
	{
	return false;
	}
	
	var daysaving =Math.floor(cigarettes/pack)*perpack;
	var daysaving11 =((cigarettes/pack)*perpack)/7;
	var weak= Math.round(daysaving11*7);
	var month= Math.round(daysaving11*30);
	var year= Math.round(daysaving11*365);


	//alert(monthsaving);
	
	document.getElementById('result').innerHTML="<h3>Du vil spare:</h3><ul> <li><b> kr</b><b>" + weak + "</b>per/uke </li> <li><b> kr</b><b>"+month+"</b>per/månde </li><li><b> kr</b><b>"+year+"</b>per/year</li></ul>";
	document.getElementById('trresult').style.display='block';
	document.getElementById('maindiv').style.display= 'none';
	return false;
}


function CalculatePipe()
{
	var cigarettes = document.getElementById("txtsmoked2").value;
	var pack =document.getElementById("txtquantity2").value;
	var perpack =document.getElementById("txtprice2").value;
	
	if (cigarettes == "")
	{
		$('input[id=txtsmoked2]').addClass('redcolor');
	
	}
	else
	{
		$('input[id=txtsmoked2]').removeClass('redcolor');
	}
	
	if (pack == "" || pack ==0.00)
	{
			$('input[id=txtquantity2]').addClass('redcolor');
		    
	}
	else
	{
		$('input[id=txtquantity2]').removeClass('redcolor');
	}
	
	if (perpack == "")
	{
		$('input[id=txtprice2]').addClass('redcolor');
		      
	}
	else
	{
		$('input[id=txtprice2]').removeClass('redcolor');
	}
	
	if(perpack == "" || pack == "" || cigarettes == "" || pack ==0.00)
	{
	return false;
	}
	
	var daysaving =(cigarettes/pack)*perpack;
	var daysaving11 =((cigarettes/pack)*perpack)/7;
	var weak= Math.round(daysaving11*7);
	var month= Math.round(daysaving11*30);
	var year= Math.round(daysaving11*365);
	

	document.getElementById('result').innerHTML="<h3> Du vil spare:</h3><ul><li> <b> kr</b><b>"+ weak +"</b>per/uke</li><li> <b> kr</b><b>"+month+"</b>per/månde</li><li> <b> kr</b><b>"+year+"</b>per/year</li></ul>";
	document.getElementById('trresult').style.display='block';
	document.getElementById('maindiv').style.display= 'none';
	return false;
}

function CalculateCigars()
{
	var cigarettes = document.getElementById("txtsmoked3").value;
	var perpack =document.getElementById("txtprice3").value;
    
	if (cigarettes == "")
	{
		$('input[id=txtsmoked3]').addClass('redcolor');
		
	}
	else
	{
		$('input[id=txtsmoked3]').removeClass('redcolor');
	}

    if (perpack == "")
	{
		$('input[id=txtprice3]').addClass('redcolor');
		    
	}
	else
	{
		$('input[id=txtprice3]').removeClass('redcolor');
	}
	
	if(perpack == "" || cigarettes == "" )
	{
	return false;
	}
	
	var daysaving =(cigarettes)*perpack;
	var daysaving11 =((cigarettes)*perpack)/7;
	var weak= Math.round(daysaving11*7);
	var month= Math.round(daysaving11*30);
	var year= Math.round(daysaving11*365);
	

	//alert(monthsaving);
	
	document.getElementById('result').innerHTML="<h3> Du vil spare:</h3><ul><li><b> kr</b><b>"+weak +"</b>per/uke</li><li> <b> kr</b><b>"+month+"</b>per/månde</li><li> <b> kr</b><b>"+year+"</b>per/year</li></ul>";
	document.getElementById('trresult').style.display='block';
	document.getElementById('maindiv').style.display= 'none';
	return false;
}

function actualfun()
{
	$("#divheadercontent").html("");
	document.getElementById('maindiv').style.display= 'block';
	document.getElementById('trresult').style.display= 'none';
}

</div>