function navRO_firstlvl(x) {
	if(x.src.indexOf("_RO") > -1){x.src = x.src.replace("_RO","");	} 
	else {x.src = x.src.substring(0, x.src.lastIndexOf(".")) + "_RO" + x.src.substring(x.src.lastIndexOf("."))}
}

function navRO(x, color) {
    var y = x.getElementsByTagName('a');
	y[0].style.color = color;
}

function navOn(temp, color) {	
	//safe function to show an element with a specified id
	var x=temp.getElementsByTagName('ul');
	if(x[0]){x[0].style.display = 'block';}
	
	if(temp.className=="firstlvl"){
	    var y = temp.getElementsByTagName('img');
	    if(y[0].src.indexOf("_RO") == -1){y[0].src = y[0].src.substring(0, y[0].src.lastIndexOf(".")) + "_RO" + y[0].src.substring(y[0].src.lastIndexOf("."))}
	}
	else{navRO(temp, color)}
}

function navOff(temp) {
    //safe function to hide an element with a specified id
	var x=temp.getElementsByTagName('ul');
	if(x[0]){x[0].style.display = 'none';}
	
	if(temp.className=="firstlvl"){
	    var y = temp.getElementsByTagName('img');
	    if(y[0].src.indexOf("_RO") > -1){y[0].src = y[0].src.replace("_RO","");}
	}
	else{navRO(temp, "#FFFFFF")}
}



        function LoadImage(image) {
            var nImage = new Image;
            myImages[image] = nImage;

            nImage.src = image;
        }