/**
 * 
 */

function showOverlay() {
	
	//define position to show the overlay
	var viewportwidth;
	var viewportheight;
	
	// the more standards compliant browsers (mozilla/netscape/opera/IE7) use window.innerWidth and window.innerHeight
	if (typeof window.innerWidth != 'undefined') {
		
	    viewportwidth = window.innerWidth,
	    viewportheight = window.innerHeight
	     
	} else if (typeof document.documentElement != 'undefined' && typeof document.documentElement.clientWidth != 'undefined' && document.documentElement.clientWidth != 0) {	
		
		//IE6 in standards compliant mode (i.e. with a valid doctype as the first line in the document)
		viewportwidth = document.documentElement.clientWidth,
	    viewportheight = document.documentElement.clientHeight
	} else {		
		// older versions of IE
	    viewportwidth = document.getElementsByTagName('body')[0].clientWidth,
	    viewportheight = document.getElementsByTagName('body')[0].clientHeight
	}

	
	var left = ( viewportwidth - $("#preorderOverlay").width() ) / 2;
	var top = ( viewportheight - $("#preorderOverlay").height() ) / 2;

	$("#preorderOverlay").css({ left : left, top : top });
	$("#preorderOverlay").show();
	$("#overlayBackground").show();
	
	
	Omniture.trackLink(12, Omniture.prop10, 14, 'Pre-Order Now');		
	
}

function hideOverlay() {
	
	$("#preorderOverlay").hide();
	$("#overlayBackground").hide();
}

function showSpecial(){ 
	newwindow=window.open('mystery/','Mystery','height=520,width=775,scrollbars=1,location=0,menubar=0,resizable=0,status=0');
	if (window.focus) {newwindow.focus()}
	return false;
}




//init hideOverlay buttons
$("#overlayBackground").click(hideOverlay);
$(".close-modal").click(hideOverlay);
$("#us-buynow").click(hideOverlay);
$("#ca-buynow").click(hideOverlay);