function shoh(id, id_link, msg1, msg2){ 
	if(document.getElementById){ // DOM3 = IE5, NS6
		if(document.getElementById(id).style.display == "none"){
			document.getElementById(id).style.display = 'block';
			document.getElementById(id_link).innerHTML = msg1;
		}else{
			document.getElementById(id).style.display = 'none';
			document.getElementById(id_link).innerHTML = msg2;
		}
	}else{ 
		if(document.layers){
			if(document.id.display == "none"){
				document.id.display = 'block';
				document.id_link.innerHTML = msg1;
			}else{
				document.id.display = 'none';
				document.id_link.innerHTML = msg2;
			}
		}else{
			if(document.all.id.style.visibility == "none"){
				document.all.id.style.display = 'block';
				document.all.id_link.innerHTML = msg1;
			}else{
				document.all.id.style.display = 'none';
				document.all.id_link.innerHTML = msg2;
			}
		}
	}
}