merker=0;

function dara(){
	for(var i=1; i<=document.getElementsByName('card').length; i++) {
		if(merker==i){
			document.getElementById('card'+i).style.display='block';
			document.getElementById('nav'+i).className="info_active";
		}else{
			document.getElementById('card'+i).style.display='none';
			document.getElementById('nav'+i).className="info_inactive";
		}		
	}

	change_link('merker', merker);
	document.getElementById("merker").value=merker;
}

/*
function hover(id) {
	for (i=1;i<=3;i++) {
		if(id==i) {
			document.getElementById('nav' + i).class = "card_hover";
		} else {
			document.getElementById('nav' + i).class = "card_unhover";
		}
	}
}

function unhover(id) {
	for(i=1;i<=3;i++) {
		if(merker!=i) {
			document.getElementById('nav' + i).class = "card_unhover";
		}
	}
}
*/