/*Oritatami*/

function chkbtn(ch){
    var obj=document.all && document.all(ch) || document.getElementById && document.getElementById(ch);
	if(ch == 'kan1'){
		document.getElementById('kan1').style.display="block";
		document.getElementById('kan2').style.display="none";
		document.getElementById('kan3').style.display="none";
		document.getElementById('kan4').style.display="none";
		document.getElementById('kan5').style.display="none";
		document.getElementById('kan6').style.display="none";
		document.getElementById('kan7').style.display="none";
		document.getElementById('kan7').style.display="none";
	}else if(ch == 'kan2'){
		document.getElementById('kan1').style.display = "none";
		document.getElementById('kan2').style.display = "block";
		document.getElementById('kan3').style.display = "none";
		document.getElementById('kan4').style.display = "none";
		document.getElementById('kan5').style.display = "none";
		document.getElementById('kan6').style.display = "none";
		document.getElementById('kan7').style.display = "none";
	}else if(ch == 'kan3'){
		document.getElementById('kan1').style.display = "none";
		document.getElementById('kan2').style.display = "none";
		document.getElementById('kan3').style.display = "block";
		document.getElementById('kan4').style.display = "none";
		document.getElementById('kan5').style.display = "none";
		document.getElementById('kan6').style.display = "none";
		document.getElementById('kan7').style.display = "none";
	}else if(ch == 'kan4'){
		document.getElementById('kan1').style.display = "none";
		document.getElementById('kan2').style.display = "none";
		document.getElementById('kan3').style.display = "none";
		document.getElementById('kan4').style.display = "block";
		document.getElementById('kan5').style.display = "none";
		document.getElementById('kan6').style.display = "none";
		document.getElementById('kan7').style.display = "none";
	}else if(ch == 'kan5'){
		document.getElementById('kan1').style.display = "none";
		document.getElementById('kan2').style.display = "none";
		document.getElementById('kan3').style.display = "none";
		document.getElementById('kan4').style.display = "none";
		document.getElementById('kan5').style.display = "block";
		document.getElementById('kan6').style.display = "none";
		document.getElementById('kan7').style.display = "none";
	}else if(ch == 'kan6'){
		document.getElementById('kan1').style.display = "none";
		document.getElementById('kan2').style.display = "none";
		document.getElementById('kan3').style.display = "none";
		document.getElementById('kan4').style.display = "none";
		document.getElementById('kan5').style.display = "none";
		document.getElementById('kan6').style.display = "block";
		document.getElementById('kan7').style.display = "none";
	}else if(ch == 'kan7'){
		document.getElementById('kan1').style.display = "none";
		document.getElementById('kan2').style.display = "none";
		document.getElementById('kan3').style.display = "none";
		document.getElementById('kan4').style.display = "none";
		document.getElementById('kan5').style.display = "none";
		document.getElementById('kan6').style.display = "none";
		document.getElementById('kan7').style.display = "block";
	}
}