$(document).ready(function(){
   	if ($('#bk')){
   		$('#bk').css('visibility','hidden');
   	}
	if ($('#nav')){
   		//$('#nav').css('visibility','hidden');
   	}
	if ($('div.details')){
   		$('div.details').css('visibility', 'hidden');
	}
	dobk();	
 });

$(window).load(function (){
	
});

$(window).resize(function (){
	checksize($('#bk img'));
});

var complete_int;

function show_bk(){
	$('#logo').css('visibility','visible');
	$('#bk').css('visibility','visible');
}


function checksize(bkimg){
	maxheight= ($(window).height()>$('#container').height())?$(window).height():$('#container').height();
	dh=maxheight/bkimg.height();
	dw=$(window).width()/bkimg.width();
	if (bkimg.hasClass('changeme')){
		if (dw>dh){
			bkimg.attr('width',bkimg.width()*dw);
			bkimg.attr('height',bkimg.height()*dw);
		}else{
			bkimg.attr('width',bkimg.width()*dh);
			bkimg.attr('height',bkimg.height()*dh);
		}
	}else{
		if (dw>dh){
			bkimg.attr('width',bkimg.width()*dh);
			bkimg.attr('height',bkimg.height()*dh);
		}else{
			bkimg.attr('width',bkimg.width()*dw);
			bkimg.attr('height',bkimg.height()*dw);
		}
	}
	bkimg.load = show_bk();
	
}

function dobk(){
	if ($('#bk').get(0)){
		var bkimg=$('#bk img');
		if (bkimg.hasClass('changeme')){	
			bkArray=['1', '2', '3', '4', '5', '6', '7'];
			var rnd=Math.floor(Math.random()*bkArray.length);
			bkimg.attr('src','images/homepage-'+bkArray[rnd]+'.jpg');
			var byline=$('#byline');
			byline.attr({'src':'images/'+bkArray[rnd]+'.png','alt':bkArray[rnd]});
		}
		checksize(bkimg);	
	}
}