function getViewportHeight() {
  if (self.innerHeight) // all except Explorer
  {
    y = self.innerHeight;
  }
  else if (document.documentElement && document.documentElement.clientHeight)
    // Explorer 6 Strict Mode
  {
    y = document.documentElement.clientHeight;
  }
  else if (document.body) // other Explorers
  {
    y = document.body.clientHeight;
  }
  return( y );
}

function getViewportWidth() {
  if (self.innerHeight) // all except Explorer
  {
    x = self.innerWidth;
  }
  else if (document.documentElement && document.documentElement.clientHeight)
    // Explorer 6 Strict Mode
  {
    x = document.documentElement.clientWidth;
  }
  else if (document.body) // other Explorers
  {
    x = document.body.clientWidth;
  }
  return( x );
}


function getViewportScrollX() {
  if (self.pageYOffset) // all except Explorer
  {
    x = self.pageXOffset;
  }
  else if (document.documentElement && document.documentElement.scrollTop)
    // Explorer 6 Strict
  {
    x = document.documentElement.scrollLeft;
  }
  else if (document.body) // all other Explorers
  {
    x = document.body.scrollLeft;
  }
  return( x );
}

function getViewportScrollY() {
  if (self.pageYOffset) // all except Explorer
  {
    y = self.pageYOffset;
  }
  else if (document.documentElement && document.documentElement.scrollTop)
    // Explorer 6 Strict
  {
    y = document.documentElement.scrollTop;
  }
  else if (document.body) // all other Explorers
  {
    y = document.body.scrollTop;
  }
  return( y );
}

function grayOut() {
	document.getElementById("grayOut").style.display = "block";
	document.getElementById("grayOut").style.height = (getViewportScrollY() + getViewportHeight()) + "px";
}

function centerPopUp()
{
	topMargin = Math.round(((getViewportScrollY() + getViewportHeight())-450)/2);
	leftMargin = Math.round(((getViewportScrollX() + getViewportWidth())-675)/2);
	document.getElementById("popUp").style.top = topMargin+"px";
	document.getElementById("popUp").style.left = leftMargin+"px";
	document.getElementById("popUp").style.display = "block";
}

function openWindow(page,id)
{
	document.getElementById('iWindow').src = page + "?id="+id;
}

function disableButtons(formButton) {
  formButton.disabled = 'true';
}

function editSubmit(formButton, formName, wAction) {
  confirmPageExit = false;
  disableButtons(formButton);
  document.forms[formName].windowAction.value=wAction;
  document.forms[formName].submit();
  return true;
}

function editCancel(ref)
{
	parent.document.getElementById("popUp").style.display = "none";
	parent.document.getElementById('iWindow').src = "blank.html";
	parent.document.getElementById("grayOut").style.display = "none";
	parent.window.location.href = ref; //used to be ../index.php
}