$(function(){
	var xAdd = 0;
	var scrollInterval = setInterval(function(){
		xAdd++;
		if(xAdd >= 1200){
			xAdd = 0;
		}
		$('#therest').css('background-position',xAdd + 'px 100%');
		$('#sea').css('background-position',(xAdd * 2) + 'px 100%');
	},80);
});