function change_Layer(layer_id, layer_mode){
	eval("document.getElementById('" + layer_id + "').style.visibility = '" + layer_mode + "';");
}

function change_Layers(layer_id, layer_mode){
	eval("document.getElementById('div_5').style.visibility = 'hidden';");
	eval("document.getElementById('div_6').style.visibility = 'hidden';");
	eval("document.getElementById('div_10').style.visibility = 'hidden';");
	eval("document.getElementById('div_11').style.visibility = 'hidden';");

	eval("document.getElementById('div_7').style.visibility = 'hidden';");
	eval("document.getElementById('div_8').style.visibility = 'hidden';");
}

function change_Layers2(layer_id, layer_mode){
	eval("document.getElementById('div_5').style.visibility = 'hidden';");
	eval("document.getElementById('div_6').style.visibility = 'hidden';");
	eval("document.getElementById('div_10').style.visibility = 'hidden';");
	eval("document.getElementById('div_11').style.visibility = 'hidden';");

	eval("document.getElementById('div_9').style.visibility = 'hidden';");
	eval("document.getElementById('div_28').style.visibility = 'hidden';");
	eval("document.getElementById('div_33').style.visibility = 'hidden';");
	eval("document.getElementById('div_174').style.visibility = 'hidden';");

}