function toggleLayer(whichLayer, hidelayer) 
{
	
if (document.getElementById) {
// this is the way the standards work
var style2 = document.getElementById(whichLayer).style;
style2.display = style2.display? "":"block";
} else if (document.all) {
// this is the way old msie versions work
var style2 = document.all[whichLayer].style;
style2.display = style2.display? "":"block";
} else if (document.layers) {
// this is the way nn4 works
var style2 = document.layers[whichLayer].style;
style2.display = style2.display? "":"block";
}

if (document.getElementById) {
// this is the way the standards work
var style2 = document.getElementById(hidelayer).style;
style2.display = style2.display? "":"none";
} else if (document.all) {
// this is the way old msie versions work
var style2 = document.all[hidelayer].style;
style2.display = style2.display? "":"none";
} else if (document.layers) {
// this is the way nn4 works
var style2 = document.layers[hidelayer].style;
style2.display = style2.display? "":"none";
}

}