// JavaScript Document

var xmlhttp
var k=0;

function disableprev()
{
	if(k<0){
		document.form.prev.disabled=true;
		document.form.next.disabled=false;
		
	}
}

function disablenxt(key)
{
	if(k>key){
		document.form.prev.disabled=false;
		document.form.next.disabled=true;
	}
}
	
	
function incrementkey(key)
{		
		    k++;
        	document.myform.prev.disabled=false;
			if((k+8)>key){
				document.myform.next.disabled=true;
				
			}
			return k;
		
}
function decrementkey()
{		
	    k--;
        document.myform.next.disabled=false;
		if(k<1){
			document.myform.prev.disabled=true;
			
		}
		return k;
}

function slideimage(key)
{
xmlhttp=GetXmlHttpObject();	
if (xmlhttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  }
<!--var url="getimage.php?thefile="+thefile;-->
var url="thumbnav.php?key="+key;
xmlhttp.open("GET",url,true);
xmlhttp.onreadystatechange = function() {
	if (xmlhttp.readyState == 4) {
		document.getElementById("thumbnav").innerHTML = xmlhttp.responseText;
	}
}
xmlhttp.send(null);
}


function viewimage(thefile)
{
xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  }
<!--var url="getimage.php?thefile="+thefile;-->
var url="getimage.php?thefile="+thefile;
xmlhttp.open("GET",url,true);
xmlhttp.onreadystatechange = function() {
	if (xmlhttp.readyState == 4) {
		document.getElementById("main").innerHTML = xmlhttp.responseText;
	}
}
xmlhttp.send(null);
}

function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}

function loadfunc(large)
{	
	
	
	viewimage(large);
	slideimage(incrementkey());
	
	
}