showhide = function(id) {
	// hide every block
	for(b=0;b<100;++b) {
		if(document.getElementById("sh_" + b) != undefined) {
			var obj = document.getElementById("sh_" + b);
			obj.style.display = "none";
		}
	}
	
	// show specific block
	var obj = document.getElementById(id)
	obj.style.display = "block";
}

hidepopup = function(id) {
	// hide specific block
	var obj = document.getElementById(id)
	obj.style.display = "none";
}

showmemory = false;
showall = function() {
	if(showmemory != true) {
		for(b=0;b<100;++b) {
			if(document.getElementById("sh_" + b) != undefined) {
				var obj = document.getElementById("sh_" + b);
				obj.style.display = "block";
			}
		}
		showmemory = true;
	}
	else {
		for(b=0;b<100;++b) {
			if(document.getElementById("sh_" + b) != undefined) {
				var obj = document.getElementById("sh_" + b);
				obj.style.display = "none";
			}
		}
		showmemory = false;
	}
}