/* site scripts */

// rollover images
var main = new Array('nav_2home','nav_2test','nav_2what','nav_2app','nav_2about','nav_2appt', 'nav_2appt2','nav_2pat','nav_home','nav_start','nav_test','nav_what','nav_our','nav_about','nav_appointment','nav_patient', 'nav_periopub', 'nav_sub', 'nav_consult', 'nav_sign');

// preload rollovers
function preload(imgArr){
	off = new Array();
	on  = new Array();
	for (i=0;i<imgArr.length;i++){
		off[i] = new Image;
		off[i].src = "./images/" + imgArr[i] + "_off.jpg";
		on[i] = new Image;
		on[i].src = "./images/" + imgArr[i] + "_on.jpg";
	}
}

// onload functions
function init(){
	// do rollover preloads
	preload(main);
	setSelect(section);
}
window.onload = init;

// set section selected state
function setSelect(section){
	navImg = "nav_"+section;
	if (document.images[navImg]){
		document.images[navImg].src = "./images/"+navImg+"_on.jpg";
	}
}

// rollovers
function roll(img,state){
	navImg = "nav_"+section;
	// prevent rollovers for selected section
	if (img != navImg){
		document.images[img].src = state ? "./images/"+img+"_on.jpg" : "./images/"+img+"_off.jpg";
	}
}