// middle_tabs.js
// 11-28-07
// Coded by SGB as a tab utility

//var focusColor = "#27256c";
//var blurColor = "#716FB9";

// preload the images
var myImages = new Array ("/images/tab_about_act.gif", "/images/tab_about_on.gif","/images/tab_packages_act.gif", "/images/tab_packages_on.gif",  "/images/tab_applications_act.gif", "/images/tab_applications_on.gif", "/images/tab_options_act.gif", "/images/tab_options_on.gif", "/images/tab_pricing_act.gif", "/images/tab_pricing_on.gif");
 
var myPreload = new Array ();
 
for (var i = 0; i < myImages.length; i++ )
{

myPreload[ i ]= new Image();
myPreload[ i ].src = myImages[ i ];

}

var activeTabMiddle = "about";

function midTabMouseOver(elementID)
{
	// turn all the button to the off position
	document.getElementById("aboutButton").src = "/images/tab_about_off.gif";
	document.getElementById("packagesButton").src = "/images/tab_packages_off.gif";
	document.getElementById("applicationsButton").src = "/images/tab_applications_off.gif";
	document.getElementById("optionsButton").src = "/images/tab_options_off.gif";
	document.getElementById("pricingButton").src = "/images/tab_pricing_off.gif";
	
	// switch on the elementID to turn on what should be on
	switch (elementID)
	{
		case "aboutButton":
			document.getElementById("aboutButton").src = "/images/tab_about_act.gif";
			break
		case "packagesButton":
			document.getElementById("packagesButton").src = "/images/tab_packages_act.gif";
			break
		case "applicationsButton":
			document.getElementById("applicationsButton").src = "/images/tab_applications_act.gif";
			break
		case "optionsButton":
			document.getElementById("optionsButton").src = "/images/tab_options_act.gif";
			break
		case "pricingButton":
			document.getElementById("pricingButton").src = "/images/tab_pricing_act.gif";
			break
		default:
			alert("The tab system does not recognize the following element: " + elementID);
	}
	
	// turn the active tab back to on
	document.getElementById(activeTabMiddle + "Button").src = "/images/tab_" + activeTabMiddle + "_on.gif";
}

// Changes the style of current element to focus style
function applyFocus(elementID)
{
	var element = document.getElementById(elementID);
	
	// turn all the tabs invisible
	document.getElementById("aboutTab").style.visibility = "hidden";
	document.getElementById("packagesTab").style.visibility = "hidden";
	document.getElementById("applicationsTab").style.visibility = "hidden";
	document.getElementById("optionsTab").style.visibility = "hidden";
	document.getElementById("pricingTab").style.visibility = "hidden";
	
	// turn all the button to the off position
	document.getElementById("aboutButton").src = "/images/tab_about_off.gif";
	document.getElementById("packagesButton").src = "/images/tab_packages_off.gif";
	document.getElementById("applicationsButton").src = "/images/tab_applications_off.gif";
	document.getElementById("optionsButton").src = "/images/tab_options_off.gif";
	document.getElementById("pricingButton").src = "/images/tab_pricing_off.gif";
	
	// switch on the elementID to turn on what should be on
	switch (elementID)
	{
		case "aboutButton":
			document.getElementById("aboutTab").style.visibility = "visible";
			activeTabMiddle = "about";
			break
		case "packagesButton":
			document.getElementById("packagesTab").style.visibility = "visible";
			activeTabMiddle = "packages";
			break
		case "applicationsButton":
			document.getElementById("applicationsTab").style.visibility = "visible";
			activeTabMiddle = "applications";
			break
		case "optionsButton":
			document.getElementById("optionsTab").style.visibility = "visible";
			activeTabMiddle = "options";
			break
		case "pricingButton":
			document.getElementById("pricingTab").style.visibility = "visible";
			activeTabMiddle = "pricing";
			break
		default:
			alert("The tab system does not recognize the following element: " + elementID);
	}
	
	// turn the active tab back to on
	document.getElementById(activeTabMiddle + "Button").src = "/images/tab_" + activeTabMiddle + "_on.gif";
}

// Changes the style of current element to focus style
function blurFocusMid()
{
	// turn all the button to the off position
	document.getElementById("aboutButton").src = "/images/tab_about_act.gif";
	document.getElementById("packagesButton").src = "/images/tab_packages_act.gif";
	document.getElementById("applicationsButton").src = "/images/tab_applications_act.gif";
	document.getElementById("optionsButton").src = "/images/tab_options_act.gif";
	document.getElementById("pricingButton").src = "/images/tab_pricing_act.gif";
	
	// turn the active tab back to on
	document.getElementById(activeTabMiddle + "Button").src = "/images/tab_" + activeTabMiddle + "_on.gif";
}