$(document).ready(function(){
	/* sliding backgrounds */
	$('.bg').css('display','block').css('opacity','0');

	var x1;
	x1 = Math.floor(Math.random()*14) + 1;
	$('.slide').append('<div class="bg n' + x1 + '"></div>');

	var x2 = x1;
	while(x2==x1){
		x2 = Math.floor(Math.random()*14) + 1;
	}
	$('.slide').append('<div class="bg n' + x2 + '"></div>');

	var x3 = x1;
	while((x3==x1)||(x3==x2)){
		x3 = Math.floor(Math.random()*14) + 1;
	}
	$('.slide').append('<div class="bg n' + x3 + '"></div>');

	var x4 = x1;
	while((x4==x1)||(x4==x2)||(x4==x3)){
		x4 = Math.floor(Math.random()*14) + 1;
	}
	$('.slide').append('<div class="bg n' + x4 + '"></div>');

	var x5 = x1;
	while((x5==x1)||(x5==x2)||(x5==x3)||(x5==x4)){
		x5 = Math.floor(Math.random()*14) + 1;
	}
	$('.slide').append('<div class="bg n' + x5 + '"></div>');

	var x6 = x1;
	while((x6==x1)||(x6==x2)||(x6==x3)||(x6==x4)||(x6==x5)){
		x6 = Math.floor(Math.random()*14) + 1;
	}
	$('.slide').append('<div class="bg n' + x6 + '"></div>');

	var x7 = x1;
	while((x7==x1)||(x7==x2)||(x7==x3)||(x7==x4)||(x7==x5)||(x7==x6)){
		x7 = Math.floor(Math.random()*14) + 1;
	}
	$('.slide').append('<div class="bg n' + x7 + '"></div>');

	var x8 = x1;
	while((x8==x1)||(x8==x2)||(x8==x3)||(x8==x4)||(x8==x5)||(x8==x6)||(x8==x7)){
		x8 = Math.floor(Math.random()*14) + 1;
	}
	$('.slide').append('<div class="bg n' + x8 + '"></div>');

	var x1;
	x1 = Math.floor(Math.random()*21) + 16;
	$('.slide').append('<div class="bg n' + x1 + '"></div>');

	var x2 = x1;
	while(x2==x1){
		x2 = Math.floor(Math.random()*21) + 16;
	}
	$('.slide').append('<div class="bg n' + x2 + '"></div>');

	var x3 = x1;
	while((x3==x1)||(x3==x2)){
		x3 = Math.floor(Math.random()*21) + 16;
	}
	$('.slide').append('<div class="bg n' + x3 + '"></div>');

	var x4 = x1;
	while((x4==x1)||(x4==x2)||(x4==x3)){
		x4 = Math.floor(Math.random()*21) + 16;
	}
	$('.slide').append('<div class="bg n' + x4 + '"></div>');

	var x5 = x1;
	while((x5==x1)||(x5==x2)||(x5==x3)||(x5==x4)){
		x5 = Math.floor(Math.random()*21) + 16;
	}
	$('.slide').append('<div class="bg n' + x5 + '"></div>');

	var x6 = x1;
	while((x6==x1)||(x6==x2)||(x6==x3)||(x6==x4)||(x6==x5)){
		x6 = Math.floor(Math.random()*21) + 16;
	}
	$('.slide').append('<div class="bg n' + x6 + '"></div>');

	var x7 = x1;
	while((x7==x1)||(x7==x2)||(x7==x3)||(x7==x4)||(x7==x5)||(x7==x6)){
		x7 = Math.floor(Math.random()*21) + 16;
	}
	$('.slide').append('<div class="bg n' + x7 + '"></div>');

	var x8 = x1;
	while((x8==x1)||(x8==x2)||(x8==x3)||(x8==x4)||(x8==x5)||(x8==x6)||(x8==x7)){
		x8 = Math.floor(Math.random()*21) + 16;
	}
	$('.slide').append('<div class="bg n' + x8 + '"></div>');

	$('.bg').first().css('opacity', '1').css('display','block');

	i = 0;
	rotateBackground = function(){
		$('.bg').eq(i).animate({opacity: '0'}, 1000, function(){ $(this).css('display','none'); });
		if(i==15){ i=-1; }
		i++;
		$('.bg').eq(i).animate({opacity: '1'}, 1500, function(){ $(this).css('display','block'); });
	};

	Backgrounds = function(){
		play = setInterval(function(){
			rotateBackground();
		}, 4000);
	};

	Backgrounds();
	/* end of backgrounds */
});