$(document).ready(function(){
	
	//load image
	
	var current_url = location.href;
	
	if ( current_url.search("tango") != -1 ) 
		{ $(".back").find("img").attr({ src : "../img/tango.jpg" , alt : "studiostendance tango"}); }
	else if ( current_url.search("theatre") != -1 ) 
		{ $(".back").find("img").attr({ src : "../img/theatre.jpg" , alt : "studiostendance theatre"}); }
	else if ( current_url.search("fitness") != -1 ) 
		{ $(".back").find("img").attr({ src : "../img/fitness.jpg" , alt : "studiostendance fitness"}); }
	else { $(".back").find("img").attr({ src : "../img/index.jpg" , alt : "studiostendance intro"}); }
	
	
	
	
	
	//on load resize image
	
	var w_width = $(window).width();
	
	var w_height = $(window).height();
	
	if ( w_width/w_height >= 1.5) {
	
		$(".back").find("img").css({'width':w_width,'height':w_width/1.5,'top':-((w_width/1.5)-w_height)/2,'left':'0px'});
	
		} else {
	
		$(".back").find("img").css({'width':w_height*1.5,'height':w_height,'left':-(w_height*1.5-w_width)/2,'top':'0px'});
	
	}
	
	//on window rezise -> resize and center image
	
	$(window).resize(function() {
	
		w_width = $(window).width();
		
		w_height = $(window).height();
		
		if ( w_width/w_height >= 1.5) {
	
		$(".back").find("img").css({'width':w_width,'height':w_width/1.5,'top':-((w_width/1.5)-w_height)/2,'left':'0px'});
	
		} else {
	
		$(".back").find("img").css({'width':w_height*1.5,'height':w_height,'left':-(w_height*1.5-w_width)/2,'top':'0px'});
	
		}
	
	}); 	
 	
 	//png fix 
 	
	$(document).pngFix(); 
	
	
});