document.onclick = function() {
  if (document.getElementById) {
  	for (i = 0; i < MainNavList.length; i++) {
                if (document.getElementById('mainsub_' + MainNavList[i])) {
        		document.getElementById('mainsub_' + MainNavList[i]).style.display = "none";
	        	document.getElementById('mainlink_' + MainNavList[i]).style.backgroundPosition = "0px 0px";
                }
	}
  	for (i = 0; i < SecondNavList.length; i++) {
                if (document.getElementById('mainsub_' + SecondNavList[i])) {
            		document.getElementById('mainsub_' + SecondNavList[i]).style.display = "none";
		        document.getElementById('mainlink_' + SecondNavList[i]).style.backgroundPosition = "0px 0px";
                }
	}
  }
};

function navToggle(obj, level) {
    var chFlag = 1;
    if (document.getElementById) {
        if (document.getElementById('mainsub_' + obj)) {
            if (document.getElementById('mainsub_' + obj).style.display === 'block') {
                chFlag = 0;
            }
        }
        if (chFlag === 1) {
            for (i = 0; i < MainNavList.length; i++) {
                if (document.getElementById('mainsub_' + MainNavList[i])) {
       		    document.getElementById('mainsub_' + MainNavList[i]).style.display = "none";
		    document.getElementById('mainlink_' + MainNavList[i]).style.backgroundPosition = "0px 0px";
                }
	    }
            for (i = 0; i < SecondNavList.length; i++) {
                if (document.getElementById('mainsub_' + SecondNavList[i])) {
            	    document.getElementById('mainsub_' + SecondNavList[i]).style.display = "none";
		    document.getElementById('mainlink_' + SecondNavList[i]).style.backgroundPosition = "0px 0px";
                }
            }
  	    if (obj !== "") {
		document.getElementById('mainsub_' + obj).style.display = "block";
		document.getElementById('mainlink_' + obj).style.backgroundPosition = "0px 17px";
	    }
        }
    }
}

function hideNav() {
    if (document.getElementById) {
        if (leaveNav) {
            for (i = 0; i < MainNavList.length; i++) {
                if (document.getElementById('mainsub_' + MainNavList[i])) {
       		    document.getElementById('mainsub_' + MainNavList[i]).style.display = "none";
		    document.getElementById('mainlink_' + MainNavList[i]).style.backgroundPosition = "0px 0px";
                }
	    }
            for (i = 0; i < SecondNavList.length; i++) {
                if (document.getElementById('mainsub_' + SecondNavList[i])) {
            	    document.getElementById('mainsub_' + SecondNavList[i]).style.display = "none";
		    document.getElementById('mainlink_' + SecondNavList[i]).style.backgroundPosition = "0px 0px";
                }
            }
        }
    }
}