function showLayer(lyrName){
	if(document.all)
		document.all(lyrName).style.visibility='visible';
	if(document.getElementById)
		document.getElementById(lyrName).style.visibility='visible';
	if(document.layers)
		document.layers[lyrName].visibility='show';
}

function hideLayer(lyrName){
	if(document.all)
		document.all(lyrName).style.visibility='hidden';
	if(document.getElementById)
		document.getElementById(lyrName).style.visibility='hidden';
	if(document.layers)
		document.layers[lyrName].visibility='hide';
}

function hideAll(){
	// target Layers
	hideLayer('map001');
	hideLayer('map002');
	hideLayer('map003');
	hideLayer('map004');
	hideLayer('map005');
	hideLayer('map006');
	hideLayer('map007');
	hideLayer('map008');
	hideLayer('map009');
	hideLayer('map0010');
	hideLayer('map0011');
	hideLayer('map0012');
}

function evt(e) {
	hideAll('0');
}

function hideClk(){
	if(document.all) {
		document.onmouseorver=evt;
	}
	if(document.getElementById) {
		document.onmouseorver=evt;
	}
	if(document.layers) {
		window.captureEvents(Event.MOUSEDOWN);
		window.onmousedown=evt;
	}
}

//function hideClk(){
//	if(navigator.appName.charAt(0)=="N"){
//		window.captureEvents(Event.MOUSEDOWN);
//		window.onmousedown=evt;
//	}
//	if(navigator.appName.charAt(0)=="M"){
//		document.onmouseorver=evt;
//	}
//}