function infoSwitch(sel) {
	
	var selFix = "info"+sel;
	var selImg = "infoBtn"+sel
	var selImgC = "top_images/info_navi"+sel+"_.gif"
	
	document.getElementById("info01").style.display = "none";
	document.getElementById("info02").style.display = "none";
	document.getElementById("info03").style.display = "none";
	document.getElementById("info04").style.display = "none";
	document.getElementById(selFix).style.display = "block";
	
	document.getElementById("infoBtn01").src = "top_images/info_navi01.gif";
	document.getElementById("infoBtn02").src = "top_images/info_navi02.gif";
	document.getElementById("infoBtn03").src = "top_images/info_navi03.gif";
	document.getElementById("infoBtn04").src = "top_images/info_navi04.gif";
	document.getElementById(selImg).src = selImgC;
	}