function GetXmlHttpObject()
	{
		//Maakt een xmlhttpobject aan voor ajax functies
		var xmlHttp=null;
	  	try
		{
			// Firefox, Opera 8.0+, Safari
			xmlHttp=new XMLHttpRequest();
		}
		catch (e)
		{
			// Internet Explorer
			try
			{
				xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
			}
			catch (e)
			{
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			}
		}
		 return xmlHttp;
	}
	
function showParts(menunummer)
{
	var element2 = document.getElementById("deel2Menu" + menunummer);
	var element3 = document.getElementById("deel3Menu" + menunummer);
			
	if(element2)
	{
		element2.className  = "witmidden "
	}
		
	if(element3)
	{
		element3.className  = "witrechts rounding"
	}
}

function hideParts(menunummer)
{
	var element2 = document.getElementById("deel2Menu" + menunummer);
	var element3 = document.getElementById("deel3Menu" + menunummer);
			
	if(element2)
	{
		element2.className  = ""
	}
		
	if(element3)
	{
		element3.className  = "rounding"
	}
}

function changeImage(nummer2, nummer,tabel, id)
{
	var element = document.getElementById("imgAfbeelding" + nummer2)
	var maxelement =  document.getElementById("hidMaximages"+ nummer2)
	
	if(element)
	{
		element.src = "/getthumb.asp?id=" + id + "&tabelnaam=" + tabel + "&veldnaam=afbeelding" + nummer + "&width=345&height=300&marked=true"
		element = document.getElementById("hidcurrent"+nummer2).value = nummer
		
		if(nummer == 1)
		{
			document.getElementById("btPreviousImage"+nummer2).style.visibility="hidden"
		}
		else
		{
			document.getElementById("btPreviousImage"+nummer2).style.visibility="visible"
		}
		
		if (nummer == maxelement.value )
		{
			document.getElementById("btNextImage"+nummer2).style.visibility="hidden"
		}
		else
		{
			document.getElementById("btNextImage"+nummer2).style.visibility="visible"
		}
		
		var teller = 1
		element = document.getElementById("btImage"+ nummer2 + "_" + teller)
		while (element)
		{
			if (teller == nummer)
			{
				element.style.color = "#f26b21"
			}
			else
			{
				element.style.color = "#FFFFFF"
			}
			
			teller = teller + 1;
			element = document.getElementById("btImage"+ nummer2 + "_" + teller)
		}
	}
}

function changeTitle(string, string2, nummer)
{
	document.getElementById('onderschrift'+nummer).innerHTML = string;	
	if(document.getElementById('onderschriftLink'+nummer))
	{
		document.getElementById('onderschriftLink'+nummer).innerHTML = string2;	
	}
}

function changeTitles(nummer)
{
	var Belement = document.getElementById("hidcurrent"+nummer).value;
	string = document.getElementById(nummer+'onder_'+Belement).value;
	string2 = document.getElementById(nummer+'link_'+Belement).value;
	document.getElementById('onderschrift'+nummer).innerHTML = string.replace(/\\/g, "");
	if(document.getElementById('onderschriftLink'+nummer))
							   {
		document.getElementById('onderschriftLink'+nummer).innerHTML = string2.replace(/\\/g, "");	
	}
}

function previousImage(nummer2, tabel, id)
{
	nummer = document.getElementById("hidcurrent"+nummer2).value - 1;
	var maxelement =  document.getElementById("hidMaximages"+nummer2)
	
	var element = document.getElementById("imgAfbeelding"+nummer2);
	if(element)
	{
		element.src = "/getthumb.asp?id=" + id + "&tabelnaam=" + tabel + "&veldnaam=afbeelding" + nummer + "&width=345&height=300&marked=true"
		element = document.getElementById("hidcurrent"+nummer2).value = nummer;
		
		if(nummer == 1)
		{
			document.getElementById("btPreviousImage"+nummer2).style.visibility="hidden"
		}
		
		if (nummer < maxelement.value )
		{
			document.getElementById("btNextImage"+nummer2).style.visibility="visible"
		}
		
		var teller = 1
		element = document.getElementById("btImage"+nummer2 + "_" + teller)
		while (element)
		{
			if (teller == nummer)
			{
				element.style.color = "#f26b21"
			}
			else
			{
				element.style.color = "#FFFFFF"
			}
			
			teller = teller + 1;
			element = document.getElementById("btImage" + nummer2 + "_" + teller)
		}
	}
}

function nextImage(nummer2, tabel, id)
{
	nummer = parseInt(document.getElementById("hidcurrent"+nummer2).value) +1;
	var maxelement =  document.getElementById("hidMaximages"+nummer2)

	var element = document.getElementById("imgAfbeelding"+nummer2);
	if(element)
	{
		element.src = "/getthumb.asp?id=" + id + "&tabelnaam=" + tabel + "&veldnaam=afbeelding" + nummer + "&width=345&height=300&marked=true"
		element = document.getElementById("hidcurrent"+nummer2).value = nummer;
		
		if (nummer == maxelement.value )
		{
			document.getElementById("btNextImage"+nummer2).style.visibility="hidden"
		}
		else
		{
			document.getElementById("btNextImage"+nummer2).style.visibility="visible"
		}
		
		if(nummer > 1)
		{
			document.getElementById("btPreviousImage"+nummer2).style.visibility="visible"
		}
		
		var teller = 1
		element = document.getElementById("btImage" + nummer2 + "_" + teller)
		while (element)
		{
			if (teller == nummer)
			{
				element.style.color = "#f26b21"
			}
			else
			{
				element.style.color = "#FFFFFF"
			}
			
			teller = teller + 1;
			element = document.getElementById("btImage" + nummer2 + "_" + teller)
		}
	}
}