/***** SCHUNCK GROUP / LAYER SCRIPTS *****/

var ns4;
var ie_ns6_ns7;

ns4 = (document.layers)? true:false
ie_ns6_ns7 = (document.getElementById)? true:false
actLayerId = 0;

function showLayer(layerId) {
    if (ns4) {
	    document.layers[layerId].visibility="show";
		actLayerId = layerId; 
	}
	
    if (ie_ns6_ns7) {
	    document.getElementById(layerId).style.visibility = "visible";
		actLayerId = layerId;
    }
}

function hideLayer(layerId) {
    if (ns4) {
	    document.layers[layerId].visibility="hide";
		actLayerId = layerId;
    }
	
    if (ie_ns6_ns7) {
	    document.getElementById(layerId).style.visibility = "hidden";
		actLayerId = layerId;
    }
}