function numbersonly(myfield, e, dec)
{
	var key;
	var keychar;

	if (window.event)
	   key = window.event.keyCode;
	else if (e)
	   key = e.which;
	else
	   return true;
	keychar = String.fromCharCode(key);
	
	// control keys
	if ((key==null) || (key==0) || (key==8) || 
	    (key==9) || (key==13) || (key==27) )
	   return true;
	
	// numbers
	else if ((("0123456789").indexOf(keychar) > -1))
	   return true;
	
	else
	   return false;
}

//CHECK BLANK FIELDS
function check_packing_fields(){
	var ampersand = document.packing_request_form.email.value.indexOf("@");

	if(document.packing_request_form.Title.value.length == 0){
		alert("Please enter your title.");
		return false;
		
	}else if (document.packing_request_form.Surname.value.length == 0){
		alert("Please enter your surname.");
		return false;
	
	}else if (document.packing_request_form.Contact_Address.value.length == 0){
		alert("Please enter your contact address.");
		return false;
	
	}else if (document.packing_request_form.Postcode.value.length == 0){
		alert("Please enter your postcode.");
		return false;
	
	}else if (document.packing_request_form.email.value.length == 0){
		alert("Please enter a valid email address.");
		return false;
	
	}else if (ampersand < 2){
		alert("Please enter a valid email address.");
		return false;

	}else if (document.packing_request_form.Tel_Home.value.length == 0){
		alert("Please enter a valid Phone Number.");
		return false;
	
	}else{
		//alert ("ok");
		packing_totalcost();
		return true;
	}
}

function packing_totalcost()
{
	var Total_Cost = 0;
	Total_Cost += document.packing_request_form.largebox.value * 2.5;
	Total_Cost += document.packing_request_form.mediumbox.value * 2;
	Total_Cost += document.packing_request_form.smallbox.value * 1.5;
	Total_Cost += document.packing_request_form.wardrobebox.value * 12.5;
	Total_Cost += document.packing_request_form.bubblewrap.value * 15;
	Total_Cost += document.packing_request_form.packingpaper.value * 12.5;
	Total_Cost += document.packing_request_form.tape.value * 1.5;
	Total_Cost += document.packing_request_form.labels.value * 9.95;
	totalfield = document.getElementById('packing_totalamount')
	if(Total_Cost != 0){
		Total_Cost = Total_Cost.toFixed(2);
		totalfield.innerHTML = "£"+Total_Cost;
		document.packing_request_form.Total_Cost.value = "£"+Total_Cost;
	}
	else{
		totalfield.innerHTML = "";
		document.packing_request_form.Total_Cost.value = "";
	}
}

function packing_openguide()
{
	guideopen = document.getElementById('packing_guide_open');
	guideopen.style.display = "none";
	guide = document.getElementById('packing_guide');
	guide.style.display = "";
	var areaCms = document.getElementById('area-cms-large');
	var areaMenus = document.getElementById('area-menus');
	height = (areaMenus.offsetHeight + areaMenus.offsetTop) + 250;
	areaMenus.style.height = (height - areaMenus.offsetTop) + 'px';
	areaCms.style.height = (height - areaCms.offsetTop) + 'px';
	document.getElementById('site-content').style.height = height + 'px';
}

function packing_closeguide()
{
	guideopen = document.getElementById('packing_guide_open');
	guideopen.style.display = "";
	guide = document.getElementById('packing_guide');
	guide.style.display = "none";
	var areaCms = document.getElementById('area-cms-large');
	var areaMenus = document.getElementById('area-menus');
	height = (areaMenus.offsetHeight + areaMenus.offsetTop) - 250;
	areaMenus.style.height = (height - areaMenus.offsetTop) + 'px';
	areaCms.style.height = (height - areaCms.offsetTop) + 'px';
	document.getElementById('site-content').style.height = height + 'px';
}