/*-----------------------------
	Common Function 
-----------------------------*/

function showLayer(id){
	
	document.getElementById(id).style.visibility = 'visible';
}

function hideLayer(id){
	
	document.getElementById(id).style.visibility = 'hidden';
}

function showDettail(){
	
	showLayer('overlayer');
	showLayer('dettail');
}

function hideDettail(){
	
	hideLayer('overlayer');
	hideLayer('dettail');
}