function ChangeNavigation(rows){
	if(document.getElementsByName) {
		if(document.getElementById(rows).style.display == "none"){
			document.getElementById(rows).style.display = "block";
		} else {
			document.getElementById(rows).style.display = "none";
		}
	} else if(document.all) {
			if(document.all(rows).style.display == "none"){
			document.all(rows).style.display = "block";
		} else {
			document.all(rows).style.display = "none";
		}
	}
}