function naviImg(imgId, divId , imgName , enable) {


	if (typeof(imgId) == "undefined") {
		imgId = "";
	}
	if (typeof(divId) == "undefined") {
		divId = "";
	}
	if (typeof(imgName) == "undefined") {
		imgName = "";
	}
	if (typeof(enable) == "undefined") {
		enable = true;
	}

	
	var div = document.getElementsByTagName('div');
	var cnt = 1;											
	
	for(var i = 0, len = div.length; i<len; i++)
	{
		if(div[i].id.match('subnavi'))
		{
			if(document.getElementById('subnavi' + cnt).id == divId)
			{
				document.getElementById('subnavi' + cnt).style.display = 'block';
			}
			else
			{
				document.getElementById('subnavi' + cnt).style.display = 'none';
			}
			cnt++;
		}
	}
	if(imgName.length > 0)
	{
		document.getElementById(imgName).src = 	document.getElementById(imgName).src.replace('_off.', '_u_off.');
	}
	
	var tags = ["img","input"];
	for(i=0, len=tags.length; i<len; i++ ) {
		var over = function() { this.src = this.src.replace('_off.', '_on.'); };
		var out	= function() { this.src = this.src.replace('_on.', '_off.'); };
		var el = document.getElementsByTagName(tags[i]);
		
		for (var j=0, len2=el.length; j<len2; j++) 
		{		
			if(el[j].id != imgId)
			{
				var attr = el[j].getAttribute('src');
			
				if (!el[j].src.match(/_off\./)&&attr) continue;
				
				if(imgName.length > 0)
				{
					if(el[j].id != imgName)
					{
						el[j].onmouseover = over;
						el[j].onmouseout  = out;
					}
					else if(enable)
					{
						el[j].onmouseover = over;
						el[j].onmouseout  = out;
					}	
				}
				else
				{
					el[j].onmouseover = over;
					el[j].onmouseout  = out;
				}
	
			}
			else
			{
				el[j].src = el[j].src.replace('_off.', '_on.');
			}	
		}
		
	}
}