var tab_no = 3;

function slideit()
{

	var oldTransContainer = document.getElementById('middle_'+tab_no);
	tab_no++;
	if(tab_no > 3) {
		tab_no = 1;
	}
	var newTransContainer = document.getElementById('middle_'+tab_no);
	
	//alert(newTransContainer.style.display);
    
    
	oldTransContainer.style.filter="blendTrans(duration=2)";
	if (xIE4Up) oldTransContainer.filters.blendTrans.Apply();
	oldTransContainer.style.visibility = "hidden";
	
	oldTransContainer.style.zIndex = "-2";
	if (xIE4Up) oldTransContainer.filters.blendTrans.Play();
	
	oldTransContainer.style.display = "none";
	
	newTransContainer.style.filter="blendTrans(duration=2)";
	if (xIE4Up) newTransContainer.filters.blendTrans.Apply();
	
	newTransContainer.style.visibility = "visible";
	
	newTransContainer.style.zIndex = "1001";
    if (xIE4Up) newTransContainer.filters.blendTrans.Play();
	newTransContainer.style.display = "block";
	
	window.setTimeout("slideit();", 10000);
}

// JavaScript Document
function addEvent( obj, type, fn ){  // the add event function
	if (obj.addEventListener) obj.addEventListener( type, fn, false );
	else if (obj.attachEvent) {
	  obj["e"+type+fn] = fn;
	  obj[type+fn] = function() {
		obj["e"+type+fn]( window.event );
	  };
	  obj.attachEvent( "on"+type, obj[type+fn] );
	}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
// Preload Images
function preload() {
	MM_preloadImages('images/nav_home_over.gif','images/nav_about_over.gif','images/nav_contact_over.gif','images/nav_portfolio_over.gif','images/nav_internet_marketing_over.gif','images/nav_process_over.gif');
}
addEvent(window, 'load', preload);