var gtype = ".gif";
var loc = "menu/";
var main = "cegism.htm";

function turn_over(name) {
	if (document.images) document[name].src = document[name+"_over"].src;
}

function turn_off(name) {
	if (document.images) document[name].src = document[name+"_off"].src;
}

function turn_click(xthis, name) {
	if (document.images) document[name].src = document[name+"_click"].src;
	if (document.all) xthis.blur();
}

function load_to_main(name, menu) {
	document.write("<FRAMESET ROWS=\"147,*\" FRAMEBORDER=\"NO\" BORDER=\"0\">");
	document.write("<FRAME SRC=\"head.htm\" "
		+ "NAME=\"Head\" SCROLLING=\"NO\" NORESIZE=\"NORESIZE\">");
	document.write("<FRAMESET COLS=\"218,*\" FRAMEBORDER=\"NO\" BORDER=\"0\">");
	document.write("<FRAME SRC=\"menu.htm\" "
		+ "NAME=\"Menu\" SCROLLING=\"NO\" NORESIZE=\"NORESIZE\" MARGINHEIGHT=\"0\" MARGINWIDTH=\"0\">");

	document.write("<FRAMESET ROWS=\"80,*\" FRAMEBORDER=\"NO\" BORDER=\"0\">");
	document.write("<FRAME SRC=\"submenu.htm\" "
		+ "NAME=\"Submenu\" SCROLLING=\"NO\" NORESIZE=\"NORESIZE\">");
	document.write("<FRAME SRC=\""+name+"\" "
		+ "NAME=\"Main\" SCROLLING=\"AUTO\" MARGINHEIGHT=\"0\" MARGINWIDTH=\"0\">");

	document.write("</FRAMESET>");
	document.write("</FRAMESET>");
	document.write("</FRAMESET>");
	top.gmenu=menu;
}

function set_href(name, menu) {
//	load_to_main(name, menu);
	window.location = "enviroduna.htm" + "?" + menu;
}

function reg(name) {
	if (document.images) {
		document[name+"_off"] = new Image();
		document[name+"_off"].src = loc+name+gtype;
		document[name+"_over"] = new Image();
		document[name+"_over"].src = loc+name+"-over"+gtype;
		document[name+"_click"] = new Image();
		document[name+"_click"].src = loc+name+"-over"+gtype;
	}
}

function preload_index_menu() {
	if (document.images) {
		reg("enviro_nyito_04");
		reg("enviro_nyito_06");
		reg("enviro_nyito_07");
		reg("enviro_nyito_08");
		reg("enviro_nyito_09");
		reg("enviro_nyito_10");
		reg("enviro_nyito_eng");
	}
}