function mainVisualSwitch(view) {
	document.getElementById('mainVisual01').style.display = "none";
	document.getElementById('mainVisual02').style.display = "none";
	document.getElementById('mainVisual03').style.display = "none";
	document.getElementById('mainVisual04').style.display = "none";
	document.getElementById('mainVisual05').style.display = "none";
	
	document.getElementById(view).style.display = "block";
	}