var _i=0;
var _fadeTime = 1200;
var _fadeInterval = 6500;
var _imgwidth = 702;
		
function slideshow(){
	
		if(_i<2){
			var pos = _imgwidth*_i;
			_i++;
		}else{
			var pos = 0;
			_i=0;
		}
		
		if(_i==0){
			$('#mainimage').hide().css({backgroundPosition: '0px 0px'}).fadeIn(_fadeTime);
		}else{
			$('#mainimage').hide().css({backgroundPosition: '-'+(pos+_imgwidth)+'px 0px'}).fadeIn(_fadeTime);
		}
}


$(document).ready(function(){
	
	var slides = setInterval("slideshow()",_fadeInterval);
	
	$('#menu_home').hover(
		function(){
			$(this).css({backgroundPosition: '-96px 0px'})
		},
		function(){
			$(this).css({backgroundPosition: '0px 0px'})
		}
	);
	$('#menu_about').hover(
		function(){
			$(this).css({backgroundPosition: '-82px 0px'})
		},
		function(){
			$(this).css({backgroundPosition: '0px 0px'})
		}
	);
	$('#menu_courses').hover(
		function(){
			$(this).css({backgroundPosition: '-97px 0px'})
		},
		function(){
			$(this).css({backgroundPosition: '0px 0px'})
		}
	);
	$('#menu_blog').hover(
		function(){
			$(this).css({backgroundPosition: '-69px 0px'})
		},
		function(){
			$(this).css({backgroundPosition: '0px 0px'})
		}
	);
	$('#menu_links').hover(
		function(){
			$(this).css({backgroundPosition: '-84px 0px'})
		},
		function(){
			$(this).css({backgroundPosition: '0px 0px'})
		}
	);
	$('#menu_testimonials').hover(
		function(){
			$(this).css({backgroundPosition: '-146px 0px'})
		},
		function(){
			$(this).css({backgroundPosition: '0px 0px'})
		}
	);
	$('#menu_contact').hover(
		function(){
			$(this).css({backgroundPosition: '-127px 0px'})
		},
		function(){
			$(this).css({backgroundPosition: '0px 0px'})
		}
	);
});