// HCA Javascript

// globals
var capable = document.getElementById;

// Show a hidden area
function show_area(id) {
    if( document.getElementById(id) ) {
        document.getElementById(id).style.display = "block";
    }
}

// Hide an area
function hide_area(id) {
    if( document.getElementById(id) ) {
        document.getElementById(id).style.display = "none";
    }
}

// load the Menu Images
var	MImages = new Array();
MImages[0] = new MenuImage("mnu_events","nav_events-over.gif","nav_events.gif","nav_events-sel.gif");
MImages[1] = new MenuImage("mnu_faqs","nav_faqs-over.gif","nav_faqs.gif","nav_faqs-sel.gif");
MImages[2] = new MenuImage("mnu_contact","nav_contact-over.gif","nav_contact.gif","nav_contact-sel.gif");
MImages[3] = new MenuImage("nav_search","nav_search-over.gif","nav_search.gif","nav_search-sel.gif");
MImages[4] = new MenuImage("nav_joinhca","nav_joinhca-over.gif","nav_joinhca.gif","nav_joinhca-sel.gif");
MImages[5] = new MenuImage("nav_profiles","nav_profiles-over.gif","nav_profiles.gif","nav_profiles-sel.gif");
MImages[6] = new MenuImage("nav_benefits","nav_benefits-over.gif","nav_benefits.gif","nav_benefits-sel.gif");
MImages[7] = new MenuImage("nav_locations","nav_locations-over.gif","nav_locations.gif","nav_locations-sel.gif");
MImages[8] = new MenuImage("nav_nursing","nav_nursing-over.gif","nav_nursing.gif","nav_nursing-sel.gif");
MImages[9] = new MenuImage("mnu_home","nav_home-over.gif","nav_home.gif","");

// MenuImage constructor
function MenuImage(img_id, img_in, img_out, img_down) {
	this.img_id = img_id;			// the image id
	this.img_in = new Image();		// the image to use when mouseover
	this.img_in.src = 'images/'+img_in;
	this.img_out = new Image();		// the image to use when mouseout
	this.img_out.src = 'images/'+img_out;
	this.img_down = new Image();	// the image when 'down'
	this.img_down.src = 'images/'+img_down;	
}

// swap in the image
function imgIn(imgId) {
	if(capable) {
		theImg = document.getElementById(MImages[imgId].img_id);
		// don't swap if image is 'down'
		if(theImg.src != MImages[imgId].img_down.src)
			theImg.src = MImages[imgId].img_in.src;
	}
}

// swap out the image
function imgOut(imgId) {
	if(capable) {
		theImg = document.getElementById(MImages[imgId].img_id);
		// don't swap if image is 'down'
		if(theImg.src != MImages[imgId].img_down.src)
			theImg.src = MImages[imgId].img_out.src;
	}
}

// make the image 'down'
function imgDown(imgId) {
	if(capable) {
		theImg = document.getElementById(MImages[imgId].img_id);
		theImg.src = MImages[imgId].img_down.src;
		// set all other buttons to 'regular'
		for(var a in MImages)
			if(document.getElementById(MImages[a].img_id) && a != imgId)
				document.getElementById(MImages[a].img_id).src = MImages[a].img_out.src;	
	}
}

// validate the quick job selection
function checkQuickJob(frm) {
	var value = frm.search.value;
	
    if(!value) {
		alert('Please select a location.');
        return false;
    } else {
        frm.submit();
    }
}