window.onload = function(){
	preloadImg("../common/img/menu/selected-training.gif", "../common/img/menu/selected-mystery.gif", "../common/img/menu/selected-spacing.gif", "../common/img/menu/selected-lecture.gif", "../common/img/menu/selected-consulting.gif", "../common/img/menu/selected-power.gif");
	preloadImg("../common/img/submenu/selected-home.gif", "../common/img/submenu/selected-company.gif", "../common/img/submenu/selected-result.gif", "../common/img/submenu/selected-blog.gif", "../common/img/submenu/selected-lecturerblog.gif", "../common/img/submenu/selected-contact.gif", "../common/img/submenu/selected-publication.gif");
	setNewWin();
	setFunc("left-menu-business", "onclick", "return showLeftSub('left-menu-business')");
	setFunc("left-menu-hierarchy", "onclick", "return showLeftSub('left-menu-hierarchy')");
	setFunc("left-menu-employment", "onclick", "return showLeftSub('left-menu-employment')");
}
function showLeftSub(id){
	if(id == currentLeftMenu){
		getObjById(id).style.backgroundImage = "url('img/close.gif')";
		getObjById(id + "-sub").style.display = "none";
		currentLeftMenu = "";
	}else{
		if(currentLeftMenu){
			getObjById(currentLeftMenu).style.backgroundImage = "url('img/close.gif')";
			getObjById(currentLeftMenu + "-sub").style.display = "none";
		}
		getObjById(id).style.backgroundImage = "url('img/open.gif')";
		getObjById(id + "-sub").style.display = "block";
		currentLeftMenu = id;
	}
	return false;
}