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 = ["","navHome","navThemes","navAbstract","navFees","navRegistration","navGrants","navTravel","navAccommodation","navVenue","navLocation","navPost","navTips","navContact","navDates","navIsraeliRegistration","navCommittee","navAgenda","navSponsors" ];
var fatherOnImgs = [];
var fatherOffImgs = [];
var fixNav = 0;

for (var i=1; i<=18; i++){
	fatherOnImgs [i] = new Image ();	
	fatherOffImgs [i] = new Image ();
}
	
fatherOnImgs [1].src = "images/nav_homeON.gif";
fatherOnImgs [2].src = "images/nav_themesON.gif";
fatherOnImgs [3].src = "images/nav_abstractON.gif";
fatherOnImgs [4].src = "images/nav_feesON.gif";
fatherOnImgs [5].src = "images/nav_registrationON.gif";
fatherOnImgs [6].src = "images/nav_grantsON.gif";
fatherOnImgs [7].src = "images/nav_travelON.gif";
fatherOnImgs [8].src = "images/nav_accommodationON.gif";
fatherOnImgs [9].src = "images/nav_venueON.gif";
fatherOnImgs [10].src = "images/nav_locationON.gif";
fatherOnImgs [11].src = "images/nav_postON.gif";
fatherOnImgs [12].src = "images/nav_tipsON.gif";
fatherOnImgs [13].src = "images/nav_contactON.gif";
fatherOnImgs [14].src = "images/nav_datesON.gif";
fatherOnImgs [15].src = "images/nav_iRegON.gif";
fatherOnImgs [16].src = "images/nav_committeeON.gif";
fatherOnImgs [17].src = "images/nav_agendaON.gif";
fatherOnImgs [18].src = "images/nav_sponsorsON.gif";


fatherOffImgs [1].src = "images/nav_home.gif";
fatherOffImgs [2].src = "images/nav_themes.gif";
fatherOffImgs [3].src = "images/nav_abstract.gif";
fatherOffImgs [4].src = "images/nav_fees.gif";
fatherOffImgs [5].src = "images/nav_registration.gif";
fatherOffImgs [6].src = "images/nav_grants.gif";
fatherOffImgs [7].src = "images/nav_travel.gif";
fatherOffImgs [8].src = "images/nav_accommodation.gif";
fatherOffImgs [9].src = "images/nav_venue.gif";
fatherOffImgs [10].src = "images/nav_location.gif";
fatherOffImgs [11].src = "images/nav_post.gif";
fatherOffImgs [12].src = "images/nav_tips.gif";
fatherOffImgs [13].src = "images/nav_contact.gif";
fatherOffImgs [14].src = "images/nav_dates.gif";
fatherOffImgs [15].src = "images/nav_iReg.gif";
fatherOffImgs [16].src = "images/nav_committee.gif";
fatherOffImgs [17].src = "images/nav_agenda.gif";
fatherOffImgs [18].src = "images/nav_sponsors.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" ; 
}