function toggleLayer(whichLayer, numberOfLayer, layName, divName, divOnClass, divOffClass)
{
		divName = (typeof divName == 'undefined') ? 'div' : divName;
		layName = (typeof layName == 'undefined') ? 'lay' : layName;
		
        for (i=0;i<numberOfLayer;i++)
        {
	        Lay = document.getElementById(layName+i).style;
			if (typeof divOnClass != 'undefined')
			{
				Div = document.getElementById(divName+i);
			}
			
			if (i == whichLayer)
			{
				Lay.display = "block";
				if (typeof divOnClass != 'undefined')
				{
					Div.className = divOnClass;
				}
			}
			else
			{
    		    Lay.display = "none";
				if (typeof divOffClass != 'undefined')
				{
					Div.className = divOffClass;
				}
			}
        }
}

function changeSearch(chkbox){
	if (chkbox.checked){
		document.getElementById("g_search").style.display = "block";
		document.getElementById("nd_search").style.display = "none";
	}
	else{
		document.getElementById("g_search").style.display = "none";
		document.getElementById("nd_search").style.display = "block";
	}
}

function changeColor(id, color, fontColor) { 
element = document.getElementById(id); 
element.style.background = color; 
element.style.color = fontColor; 
}