function initStaf() {
	if( null != document.getElementById("stafBlock") )
	{
		// initiates the object for sending and receiving data
		httpStaf = staf_getHTTPObject();
		oRemovedNode = document.getElementById("stafBlock");
		oRemovedNode.parentNode.removeChild(oRemovedNode);
		document.body.appendChild(oRemovedNode);
		
		stafLnk = document.getElementById('stafLink');
		staffrm = document.getElementById('stafForm').innerHTML;
		if(stafLnk)
		{
			stafLnk.onclick = function()
			{
				if( '' == document.getElementById('stafUrl').value )
				{
					document.getElementById('stafUrl').value = document.URL;
				}

				document.getElementById('stafBlock').style.display = 'block';
				ws = staf_windowsize();
				w = parseInt(document.getElementById('stafBlock').offsetWidth);
				h = parseInt(document.getElementById('stafBlock').offsetHeight);
				stafTopOffset =0;
				
				if(document.body.scrollTop)
				{
					stafTopOffset = document.body.scrollTop;
				}
				else if( document.documentElement.scrollTop )
				{
					stafTopOffset = document.documentElement.scrollTop;
				}
	
				document.getElementById('stafBlock').style.top = (stafTopOffset + ((ws.y/2)-(h/2)))+"px";
				//document.getElementById('stafBlock').style.left = ((ws.x/2)-(w/2))+"px";
				return false;
			}
		}
	}
}


function staf_Close() {
	document.getElementById('stafBlock').style.display = 'none';
	return false;
}
function staf_Reset() {

	document.getElementById('stafBlock').style.display = 'none';
	document.getElementById('stafForm').innerHTML = staffrm;
}
function staf_Error(stafErrorArr) {
	document.getElementById('stafLblFromName').style.color = "inherit";
	document.getElementById('stafLblFromMail').style.color = "inherit";
	document.getElementById('stafLblToName').style.color = "inherit";
	document.getElementById('stafLblToMail').style.color = "inherit";
	
	for(i = 0; i < stafErrorArr.length; i++) {
		document.getElementById(stafErrorArr[i]).style.color = '#ff0000';
	}
	
}

function staf_Submit() {
	if (httpStaf.readyState == 4 || httpStaf.readyState == 0) {
		httpStaf.open("POST", SendStaf, true);
		httpStaf.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
  		params = 'url='+document.getElementById('stafUrl').value;
		params+= '&fromname='+document.getElementById('stafFromName').value;
		params+= '&frommail='+document.getElementById('stafFromMail').value;
		params+= '&toname='+document.getElementById('stafToName').value;
		params+= '&tomail='+document.getElementById('stafToMail').value;
		httpStaf.send(params);

		httpStaf.onreadystatechange = function ()
		{
			if(httpStaf.readyState == 4)
			{
				results = httpStaf.responseText;
				
				if(results.substring(0,5) == "Array")
				{
					results = eval(results);
					staf_Error(results);
				}
				else
				{
					document.getElementById("stafForm").innerHTML = staf_confirmtext;
					setTimeout('staf_Reset()', 1000);
				}
    	}
		}
  }
	else
	{
		setTimeout('staf()', 400)
  }
	
	return false;
}

//returns the window size 
function staf_windowsize() {
	var x,y;
	if (self.innerHeight) // all except Explorer
	{
		x = self.innerWidth;
		y = self.innerHeight;
	}
	else if (document.documentElement && document.documentElement.clientHeight)
		// Explorer 6 Strict Mode
	{
		x = document.documentElement.clientWidth;
		y = document.documentElement.clientHeight;
	}
	else if (document.body) // other Explorers
	{
		x = document.body.clientWidth;
		y = document.body.clientHeight;
	}
	retval = new Object;
	retval.x = x;
	retval.y = y; 
	return retval;
}
//initiates and handles the XMLHttpRequest object
//as found here: http://www.webpasties.com/xmlHttpRequest

function staf_getHTTPObject() {
  var xmlhttp;

  if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
    try {
      xmlhttp = new XMLHttpRequest();
    } catch (e) {
      xmlhttp = false;
    }
  }
  return xmlhttp;
}


// brothercake's generic onload
// http://www.brothercake.com/site/resources/scripts/onload/

if(typeof window.addEventListener != 'undefined')
{
	//.. gecko, safari, konqueror and standard
	window.addEventListener('load', initStaf, false);
}
else if(typeof document.addEventListener != 'undefined')
{
	//.. opera 7
	document.addEventListener('load', initStaf, false);
}
else if(typeof window.attachEvent != 'undefined')
{
	//.. win/ie
	window.attachEvent('onload', initStaf);
}