function show(idLayer) {
cLayer=bVer.dom?document.getElementById(idLayer).style:bVer.ie4?document.all[idLayer].style:bVer.ns4?idParent?document[idParent].document[idLayer]:document[idLayer]:0;
cLayer.display='block';
}

function hide(idLayer) {
cLayer=bVer.dom?document.getElementById(idLayer).style:bVer.ie4?document.all[idLayer].style:bVer.ns4?idParent?document[idParent].document[idLayer]:document[idLayer]:0;
cLayer.display='none';
}

function chkBrowser() {
	this.ver=navigator.appVersion;
	this.dom=document.getElementById?1:0;
	this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0;
	this.ie4=(document.all && !this.dom)?1:0;
	this.ns5=(this.dom && parseInt(this.ver) >= 5) ?1:0;
	this.ns4=(document.layers && !this.dom)?1:0;
	this.bVer=(this.ie5 || this.ie4 || this.ns4 || this.ns5);
	return this;
}
bVer=new chkBrowser();
ns4 = (document.layers)? true:false;
ie4 = (document.all)? true:false;
bVerOK = ((document.all)? true:false)



function change(id, newClass) {
identity=document.getElementById(id);
identity.className=newClass;
}



function hotel() {
change('switch_1', 'toplnks_active');
change('switch_2', 'toplnks_norm');
change('switch_3', 'toplnks_norm');
change('switch_4', 'toplnks_norm');
hide('srch_vacations');
hide('srch_cars');
hide('srch_flights');
show('srch_hotel');
hide('travelsrch_h2_b');
hide('travelsrch_h2_c');
hide('travelsrch_h2_d');
show('travelsrch_h2_a');
}
function flight() {
change('switch_2', 'toplnks_active');
change('switch_1', 'toplnks_norm');
change('switch_3', 'toplnks_norm');
change('switch_4', 'toplnks_norm');
hide('srch_cars');
hide('srch_vacations');
hide('srch_hotel');
show('srch_flights');
hide('travelsrch_h2_b');
hide('travelsrch_h2_c');
hide('travelsrch_h2_a');
show('travelsrch_h2_d');
}
function vacation() {
change('switch_3', 'toplnks_active');
change('switch_1', 'toplnks_norm');
change('switch_2', 'toplnks_norm');
change('switch_4', 'toplnks_norm');
hide('srch_cars');
hide('srch_flights');
hide('srch_hotel');
show('srch_vacations');
hide('travelsrch_h2_a');
hide('travelsrch_h2_c');
hide('travelsrch_h2_d');
show('travelsrch_h2_b');
}
function cars() {
change('switch_4', 'toplnks_active');
change('switch_1', 'toplnks_norm');
change('switch_3', 'toplnks_norm');
change('switch_2', 'toplnks_norm');
hide('srch_flights');
hide('srch_hotel');
hide('srch_vacations');
show('srch_cars');
hide('travelsrch_h2_b');
hide('travelsrch_h2_a');
hide('travelsrch_h2_d');
show('travelsrch_h2_c');
}