var thisHash=location.hash;

$(function(){
	if(thisHash){tabChange();}
	
	$("#main-content-release-navi li a").click(function(){
		activeNum=$(this).attr("rel");
		releaseChange(activeNum);
	});
	
});

function tabChange(){
	myRE=new RegExp("[1-4]","g");
	result=thisHash.match(myRE);
	if(result){releaseChange(result);}	
}

function releaseChange(activeNum){
	leftPosition = new Array('0','-157','-314','-471');
	for(num=1;num<5;num++){
		$("#main-content-release-navi"+num).css({background: 'url("settings/css/images/release_navi.gif") no-repeat '+leftPosition[num-1]+'px 0px'});
	}
	$("#main-content-release-press").css({display: 'none'});
	$("#main-content-release-research").css({display: 'none'});
	$("#main-content-release-news").css({display: 'none'});
	$("#main-content-release-event").css({display: 'none'});
	
	$("#main-content-release-navi"+activeNum).css({background: 'url("settings/css/images/release_navi.gif") no-repeat '+leftPosition[activeNum-1]+'px -45px'});
	if(activeNum==1){
		$("#main-content-release-press").css({display: 'block'});
	}else if(activeNum==2){
		$("#main-content-release-research").css({display: 'block'});
	}else if(activeNum==3){
		$("#main-content-release-news").css({display: 'block'});
	}else if(activeNum==4){
		$("#main-content-release-event").css({display: 'block'});
	}
}