// JavaScript Document
/*

roll() handles the image rollovers.

*/

function roll(node,status)
{ nodeImg = node.firstChild.firstChild
  srcImage = nodeImg.getAttribute("src")
  
  if (status)
  { navState = srcImage.substring(srcImage.length - 7,srcImage.length - 4)
    if (navState == "off")
    { srcImage = srcImage.substring(0,srcImage.length - 7)
      srcImage = srcImage + "on.gif"
      nodeImg.setAttribute("src",srcImage)
    }
  }
  else
  {  navState = srcImage.substring(srcImage.length - 7,srcImage.length - 4)
    if ((navState != "sel") && (navState != "off"))
    {  srcImage = srcImage.substring(0,srcImage.length - 6)
      srcImage = srcImage + "off.gif"
      nodeImg.setAttribute("src",srcImage)
    }
  }
}




/*

these functions begin and maintain the automatic cycling of the slideshow.

*/

var currentSlide = 1
var previousSlide = 3
var slideFading = false
var opcty = 0

function nextSlide()
{ slideFading = true
  previousSlide = currentSlide

  currentSlide++
  if (currentSlide == 4)
  { currentSlide = 1
  }

  slideUpdate()
}




/*

slideRoll() and slideUpdate() handles the slideshow functionality and image swapping.

*/

function slideRoll(which)
{ if (slideFading)
  { return
  }
  if (which == currentSlide)
  { return
  }

  slideFading = true
    
  previousSlide = currentSlide
  currentSlide = which

  slideUpdate()
}

function slideUpdate()
{ setOpacity("slide" + currentSlide,0)
  document.getElementById("slide" + currentSlide).style.visibility = "visible"
  
  for(i=1;i<=3;i++)
  { if (i == currentSlide)
    { document.getElementById("option" + i + "off").style.visibility = "hidden"
      document.getElementById("option" + i + "on").style.visibility = "visible"
    }
    else
    { document.getElementById("option" + i + "off").style.visibility = "visible"
      document.getElementById("option" + i + "on").style.visibility = "hidden"
    }
  }
    
  opcty = 0
  fadeSlides()
}

function fadeSlides()
{ opcty = opcty + 10
  setOpacity("slide" + currentSlide,opcty)
  setOpacity("slide" + previousSlide,(100 - opcty))
  if (opcty < 100)
  { setTimeout("fadeSlides()",30)
  }
  else
  { document.getElementById("slide" + previousSlide).style.visibility = "hidden"
    slideFading = false
  }
}



function setOpacity(layr,num)
{	obj = document.getElementById(layr).style
	obj.MozOpacity = (num/100)
	obj.opacity = (num/100)
	obj.filter = "alpha(opacity=" + num + ")"
}

function getNumberOfPages(theListCtrlID)
{
	var myNumberOfPages = 0;
	var myListCtrl = document.getElementById(theListCtrlID);
	if (myListCtrl != null)
	{
		var myItemList = myListCtrl.getElementsByTagName("li");
		if (myItemList != null && myItemList.length > 0)
		{
			var myItem = null;
			myItem = myItemList[myItemList.length-1];
			myNumberOfPages = myItem.id;
		}
	}
	return myNumberOfPages;
}

function getDisplayedPageIndex(theListCtrlID)
{
	var myListCtrl = document.getElementById(theListCtrlID);
	if (myListCtrl != null)
	{
		var myItemList = myListCtrl.getElementsByTagName("li");
		if (myItemList != null)
		{
			var myItem = null;
			for (var i = 0; i < myItemList.length; i++)
			{
				myItem = myItemList[i];
				if ( myItem.style.display == "" )
					return myItem.id;
			}
		}
	}
	return -1;
}

function Paginate(thePageIndex, theListCtrlID, thePaginationCtrlID)
{
	var myListCtrl = document.getElementById(theListCtrlID);
	if (myListCtrl != null)
	{
		var myItemList = myListCtrl.getElementsByTagName("li");
		if (myItemList != null)
		{
			var displayedPageIndex = getDisplayedPageIndex(theListCtrlID);
			if (thePageIndex == 0)
			{
				thePageIndex = displayedPageIndex-1;
			}
			if (thePageIndex-1 == getNumberOfPages(theListCtrlID))
			{
				thePageIndex = displayedPageIndex;
				thePageIndex++;
			}

			var myItem = null;
			for (var i = 0; i < myItemList.length; i++)
			{
				myItem = myItemList[i];
				if (myItem.id == thePageIndex)
				{
					myItem.style.display = "";
				}
				else
				{
					myItem.style.display = "none";
				}
			}
		}
	}
	var myPaginationCtrl = document.getElementById(thePaginationCtrlID);
	if (myPaginationCtrl != null)
	{
		var myPageList = myPaginationCtrl.getElementsByTagName("li");
		if (myPageList != null)
		{
			var myPage = null;
			var myPrevPage = myPageList[0];
			var myNextPage = myPageList[myPageList.length-1];
			for (var j = 0; j < myPageList.length; j++)
			{
				myPage = myPageList[j];
				if ( myPage.id == thePageIndex )
				{
					myPage.className="selected";
//					myPage.setAttribute("classname", "selected");
				}
				else
				{
					myPage.className="";
//					myPage.setAttribute("classname", "");
				}
			}
			if (thePageIndex <= 1)
			{
				myPrevPage.style.display = "none";
			}
			else
			{
				myPrevPage.style.display = "";
			}
			if (thePageIndex >= myPageList.length-2)
			{
				myNextPage.style.display = "none";
			}
			else
			{
				myNextPage.style.display = "";
			}
		}
	}
}

function FilterList_ItemCtrl(theListCtrlID, theItemID)
{
	var myListCtrl = document.getElementById(theListCtrlID);
	if (myListCtrl != null)
	{
		var myItemList = myListCtrl.getElementsByTagName("li");
		if (myItemList != null)
		{
			var myItem = null;
			for (var i = 0; i < myItemList.length; i++)
			{
				myItem = myItemList[i];
				if (myItem.id == theItemID || theItemID == '')
				{
					myItem.style.display = "";
				}
				else
				{
					myItem.style.display = "none";
				}
			}
		}
	}
}

function FilterList_SelectCtrl(theListCtrlID, theSelectCtrlID)
{
	var mySelectCtrl = document.getElementById(theSelectCtrlID);
	if (mySelectCtrl != null)
	{
		var mySelectedItem = mySelectCtrl.options[mySelectCtrl.selectedIndex];
		if (mySelectedItem != null)
		{
			FilterList_ItemCtrl(theListCtrlID, mySelectedItem.value);
		}
	}
}

function showCtrl(theID, status)
{
	var myCtrl = document.getElementById(theCtrlID);
	if (myCtrl != null)
	{
		if (status)
		{
			myCtrl.style.display = "block";
		}
		else
		{
			myCtrl.style.display = "none";
		}
	}
}

function showCtrl(theCtrlID)
{
	var myCtrl = document.getElementById(theCtrlID);
	if (myCtrl != null)
	{
		if (myCtrl.style.display == "none")
			myCtrl.style.display = "block";
		else
			myCtrl.style.display = "none";

	}
}

function openEmail(path)
{
	var url = window.location;
	path += url	
	window.location.href = (path);
}
/*

handles the Our Services landing page.

*/

function rollService(obj)
{ yy = document.getElementById("servicesNav").getElementsByTagName("li")
  zz = document.getElementById("servicesNav").getElementsByTagName("li").length
  
  for (i=0;i<zz;i++)
  { if (obj == yy[i])
    { document.getElementById("servicesContent" + i).style.display = "block"
      if (i == 0)
      { yy[i].className = "firstSelected"
      }
      else if (i == (zz - 1))
      { yy[i].className = "lastSelected"
      }
      else
      { yy[i].className = "selected"
      }
    }
    else
    { document.getElementById("servicesContent" + i).style.display = "none"
      if (i == 0)
      { yy[i].className = "first"
      }
      else if (i == (zz - 1))
      { yy[i].className = "last"
      }
      else
      { yy[i].className = ""
      }
    }
  }
}

function showServSearch(status)
{ if (status)
  { document.getElementById("servicesDrop").style.display = "block"
  }
  else
  { document.getElementById("servicesDrop").style.display = "none"
  }
}