var GECKO = document.getElementById? 1:0 ;
var NS = document.layers? 1:0 ;
var IE = document.all? 1:0 ;

// SwitchLayer
////////////////////////////////////////
function switchlayer (Layer_Name){ 
	var Layer_Nametwo = Layer_Name+'2';
	var TWO = document.getElementById(Layer_Nametwo)? 1:0 ;
	if (document.getElementById) { 
		var obj = document.getElementById(Layer_Name);
		obj.style.display = (obj.style.display=='block'?'none':'block');
		if (TWO) {
			var objtwo = document.getElementById(Layer_Nametwo);
			objtwo.style.display = (objtwo.style.display=='block'?'none':'block');
		}
	} else if(document.all) { // IE
		Layer_Name.style.display = (Layer_Name.style.display=='block'?'none':'block');
		Layer_Nametwo.style.display = (Layer_Nametwo.style.display=='block'?'none':'block');
	} else if (document.layers) { // Netscape 4.x
		document.Layer_Name.style.display = (document.Layer_Name.style.display=='block'?'none':'block');
		document.Layer_Nametwo.style.display = (document.Layer_Nametwo.style.display=='block'?'none':'block');
	}
}


function closelayer(Layer_Name) {
	var Layer_Name2 = Layer_Name+'2';

	if (GECKO) {
		document.getElementById(Layer_Name).style.display='none';
		document.getElementById(Layer_Name2).style.display='block';
	} else if (NS) {
		document.layers[Layer_Name].display='none';
		document.layers[Layer_Name2].display='block';
	} else if (IE) {
		document.all[Layer_Name].style.display='none';
		document.all[Layer_Name2].style.display='block';
	}
}


function openlayer(Layer_Name) {
	var Layer_Name2 = Layer_Name+'2';

	if (GECKO) {
		document.getElementById(Layer_Name).style.display='block';
		document.getElementById(Layer_Name2).style.display='none';
	} else if (NS) {
		document.layers[Layer_Name].display='block';
		document.layers[Layer_Name2].display='none';
	} else if (IE) {
		document.all[Layer_Name].style.display='block';
		document.all[Layer_Name2].style.display='none';
	}
}