function imgC(imgPath,obj) {
	on_image = new Image();
	on_image.src = imgPath;
	obj.src = on_image.src;
}

var LayFlag = "";
function doLayer(flag){
    if(flag == 1){
        LayFlag = 1; 
    }
}

function HideNavi(l) {
    if(LayFlag == 1){
        document.getElementById(l).style.visibility = "hidden";
    }
}

function ShowNavi(l) {
    if(LayFlag == 1){
        document.getElementById(l).style.visibility = "visible";
    }
}



// �摜�����ւ�
function imgC(obj)
{
	var fpath = obj.src;
	if( fpath.match(/_on/) ){
		obj.src = fpath.replace(/_on/,'');
	}else{
		if( fpath.match(/png/) ){
			obj.src = fpath.replace(/.png/,'_on.png');
		}
		if( fpath.match(/jpg/) ){
			obj.src = fpath.replace(/.jpg/,'_on.jpg');
		}
		if( fpath.match(/gif/) ){
			obj.src = fpath.replace(/.gif/,'_on.gif');
		}
	}
}