var isIE = ((document.all)? true  : false );
var isNS6 = ((document.getElementById && !document.all)? true: false );


if (!document.getElementById){
	document.getElementById = function (id){
							if (document.all){
								return document.all[id];
							}
						}
}


var fatherNames = ["","navHomepage","navAgenda","navEnglish","navHebrew","navReg" ];
var fatherOnImgs = [];
var fatherOffImgs = [];
var fixNav = 0;

for (var i=1; i<=5; i++){
	fatherOnImgs [i] = new Image ();	
	fatherOffImgs [i] = new Image ();
}
	
fatherOnImgs [1].src = "images/nav_homepageon.gif";
fatherOnImgs [2].src = "images/nav_agendaon.gif";
fatherOnImgs [3].src = "images/nav_englishon.gif";
fatherOnImgs [4].src = "images/nav_hebrewon.gif";
fatherOnImgs [5].src = "images/nav_regon.gif";

fatherOffImgs [1].src = "images/nav_homepage.gif";
fatherOffImgs [2].src = "images/nav_agenda.gif";
fatherOffImgs [3].src = "images/nav_english.gif";
fatherOffImgs [4].src = "images/nav_hebrew.gif";
fatherOffImgs [5].src = "images/nav_reg.gif";






function navOver(navNum , isOver ){
	if (!document.images[ fatherNames[navNum] ] || fixNav==navNum )return ; 
	
	if (isOver){
		document.images[ fatherNames[navNum] ].src =  fatherOnImgs[navNum].src ;
	}else{
		document.images[ fatherNames[navNum] ].src =  fatherOffImgs[navNum].src ;
	}

}

function markNav(){
	document.images[ fatherNames[fixNav] ].src =  fatherOnImgs[fixNav].src ;
	document.getElementById("nav"+fixNav).className = "sel" ; 
}