jQuery.preloadImages = function()
{
	for(var i = 0; i<arguments.length; i++)
	{
		jQuery("<img>").attr("src", arguments[i]);
	}
}

$.preloadImages("/public/css/images/tab-1-off.jpg", "url(/public/css/images/tab-4-off.jpg", "url(/public/css/images/tab-off.jpg", "/public/css/images/tab-1-on.jpg", "/public/css/images/tab-4-on.jpg", "/public/css/images/tab-on.jpg");

var active = 1;

function showtabs(id) {

	$('#tabC'+active).css('display', 'none');
	
	if(active == 1) {	
		$('.tab'+active).css('background', 'url(/public/css/images/tab-1-off.jpg) top left no-repeat');
	} else if(active == 4) {
		$('.tab'+active).css('background', 'url(/public/css/images/tab-4-off.jpg) top right no-repeat');
	} else {
		$('.tab'+active).css('background', 'url(/public/css/images/tab-off.jpg) top left repeat-x');
	}
	$('.tab'+active).css('border-bottom', '1px solid #ddd');
	
	$('#tabC'+id).css('display', 'block');
	$('#tabC'+id).focus();
	
	if(id == 1) {	
		$('.tab'+id).css('background', 'url(/public/css/images/tab-1-on.jpg) top left no-repeat');
	} else if(id == 4) {
		$('.tab'+id).css('background', 'url(/public/css/images/tab-4-on.jpg) top right no-repeat');
	} else {
		$('.tab'+id).css('background', 'url(/public/css/images/tab-on.jpg) top left repeat-x');
	}
	$('.tab'+id).css('border-bottom', '0px');
	
	active = id;

}

function subs(element) {
	
	$('#subscription'+element).show();
	
}

function popup(url) {
	
	window.open(url, '_blank', 'width=350,height=400,scrollbars=yes,status=no,resizable=no,screenx=350,screeny=250');
	
}


var cashback = [[vala,valb],[valc,vald],[vale,valf]];

function format(num) {
	num = num.toString().replace(/\$|\,/g,'');
	if (isNaN(num)) num = "0";
	num = Math.floor(num*100+0.50000000001);
	pence = num%100;
	if (pence < 10) pence = "0" + pence;
	num = Math.floor(num/100).toString();
	for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
		num = num.substring(0,num.length-(4*i+3))+','+num.substring(num.length-(4*i+3));
	return '£' + num + '.' + pence;
}

function howmuch() {
	var now = (new Date()).getTime();
	for (i = 0; i < cashback.length; i++) {
		if (now < cashback[i][0]) break;
	}
	if (i == 3) document.getElementById('money').innerHTML = format(cashback[i - 1][1]);
	else {
		var cba = cashback[i - 1][0];
		var cbb = cashback[i - 1][1];
		var rand = Math.floor(Math.random()*Math.floor(Math.random()*4321));
		document.getElementById('money').innerHTML = format(((now-cba) / (cashback[i][0]-cba) * (cashback[i][1]-cbb)) + cbb);
		setTimeout(howmuch, rand);
	}
}