/* */
// function used to rotate the header images
/* */
function rotateHeaderImage(delay, firstImage, secondImage, maxImage)
{
	var nextImage;
	var firstImageName = 'headerimage' + firstImage;
	var secondImageName = 'headerimage' + secondImage;
	
	var firstImage = parseInt(firstImage);
	var secondImage = parseInt(secondImage);
	var maxImage = parseInt(maxImage);
	
	// establish which image should be shown next, increment or start again
	if(secondImage<maxImage)
	{
		nextImage = secondImage + 1;
	}else{
		nextImage = 1;
	}// end if secondImage<maxImage
	
	// call function to hide the current (first) header image
	// and show the next (second) header image
	$(firstImageName).fade(); 
	$(secondImageName).appear();
			
	// call the script again to continue with the rotation		
	setTimeout('rotateHeaderImage(' + delay + ', ' + secondImage + ', ' + nextImage + ', ' + maxImage + ')',delay);
}// end function rotateHeaderImage()


/* */
// function to make an element appear and disappear
/* */
function changeDisplay(obj)
{
	var el = document.getElementById(obj);
	
	if ( el.style.display == "none" ) 
	{
		// show the element
		el.style.display = '';		
	}else {
		// make the element disappear
		el.style.display = 'none';
	}// end if else
}// end functon changeDisplay()


/* */
// function to make a menu element appear and all other menu elements disappear
/* */
function changeMenuDisplay(group, current, start, end)
{
	var el = document.getElementById(group + current);
	var loopStart = parseInt(start);
	var loopEnd = parseInt(end);
	
	// close all menu items
	for(i=loopStart; i<=loopEnd; i++)
	{
		el = document.getElementById(group + i);
		el.style.display = 'none';
	}// end for
	
	// show the specified current menu item
	el = document.getElementById(group + current);
	el.style.display = '';
	
	// hide the default sub menu
	def = document.getElementById('defaultSubMenu');
	def.style.display = 'none';
}// end functon changeMenuDisplay()


/* */
/* Ajax Function to Call PHP Script */
/* */

function ajaxFunction(targetObj, script)
{
	var xmlHttp;

	try
	{  
		// Firefox, Opera 8.0+, Safari  
		xmlHttp=new XMLHttpRequest();  
	}
	catch (e)
	{  
		// Internet Explorer  
		try
		{    
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");    
		}
		catch (e)
		{    
			try
			{      
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");      
			}
			catch (e)
			{      
				alert("Your browser does not support AJAX!");      
				return false;      
			}    
		}  
	}

	xmlHttp.onreadystatechange=function()
	{
		if(xmlHttp.readyState==4)
		{
			document.getElementById(targetObj).innerHTML=xmlHttp.responseText;
			// alert(xmlHttp.responseText);
		}
	}

	xmlHttp.open("POST",script,true);
	xmlHttp.send(null);	  		
}// end function


/* */
/* Ajax Function to Call PHP Script and make lightbox appear */
/* */

function ajaxFunctionAppear(targetObj, script)
{
	var xmlHttp;

	try
	{  
		// Firefox, Opera 8.0+, Safari  
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{  
		// Internet Explorer  
		try
		{    
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");   
		}
		catch (e)
		{    
			try
			{      
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");     
			}
			catch (e)
			{      
				alert("Your browser does not support AJAX!");      
				return false;      
			}    
		}  
	}

	xmlHttp.onreadystatechange=function()
	{
		if(xmlHttp.readyState==4)
		{
			document.getElementById(targetObj).innerHTML=xmlHttp.responseText;
			// alert(xmlHttp.responseText);
		}
	}

	xmlHttp.open("POST",script,true);
	xmlHttp.send(null);	
	
	// check the browser
	var browserName=navigator.appName;
	
	if (browserName=="Microsoft Internet Explorer")
	{
	  	// IE
	  	
	  	// set the height of the element
		var el = document.getElementById('lightboxWrapper');
		el.style.top = 100 + document.documentElement.scrollTop + "px";
	}else{
		// NOT IE
		
		// set the height of the element
		var el = document.getElementById('lightboxWrapper');
		// el.style.top = 100 + document.body.scrollTop + "px";
		el.style.top = 100 + window.pageYOffset + "px";
	}// end if else IE
	
	$('lightboxBg').appear({ from: 0.0, to: 0.6 });
	$('lightboxWrapper').appear(); 
	return false;
}// end function

// ***
// Function to Swap Gallery Images
function swapGalleryImages(obj, thObj)
{
	var el = document.getElementById(obj);
	var th = document.getElementById(thObj);
	var curSrc = el.src;
	var newThSrc = curSrc.replace('galleryimages/', 'galleryimages/th_');
	
	var curThSrc = th.src
	var newSrc = curThSrc.replace('galleryimages/th_', 'galleryimages/');
	
	el.src = newSrc;
	th.src = newThSrc;
}// end function


// ***
// Function to Swap Detail Images
function swapDetailImages(obj, thObj)
{
	var el = document.getElementById(obj);
	var th = document.getElementById(thObj);
	var curSrc = el.src;
	var newThSrc = curSrc.replace('detailimages/', 'detailimages/th_');
	
	var curThSrc = th.src
	var newSrc = curThSrc.replace('detailimages/th_', 'detailimages/');
	
	el.src = newSrc;
	th.src = newThSrc;
}// end function