function toggleLayer(whichLayer)
{
	if (document.getElementById)
	{
		var style2 = document.getElementById(whichLayer).style;
		style2.display = style2.display? "":"block";
	}
	else if (document.all)
	{
		var style2 = document.all[whichLayer].style;
		style2.display = style2.display? "":"block";
	}
	else if (document.layers)
	{
		var style2 = document.layers[whichLayer].style;
		style2.display = style2.display? "":"block";
	}
}

function externalLinks()
{ 
	if (!document.getElementsByTagName) return; 
	var anchors = document.getElementsByTagName("a"); 
	for (var i=0; i<anchors.length; i++)
	{ 
	   var anchor = anchors[i]; 
	   if (anchor.getAttribute("href") && 
	   	anchor.getAttribute("rel") == "external") 
	    anchor.target = "_blank"; 
	 } 
} 
window.onload = externalLinks;

function searchsite()
{
	document.getElementById("searchbutton").disabled=true;
	var str_search = document.getElementById("search").value
	if(str_search.replace(/ /gi,"")=="")
	{
		alert("Please enter the keyword or phrase you want to search for.");
		document.getElementById("searchbutton").disabled=false;
		document.getElementById("search").value="";
		document.getElementById("search").focus();
		return false;
	}
	else
	{
		document.getElementById("sitesearch").submit();
	}
}
function advancedsearchsite()
{
	document.getElementById("advancedsearchbutton").disabled=true;
	var str_search = document.getElementById("advancedsearch").value
	if(str_search.replace(/ /gi,"")=="")
	{
		alert("Please enter the keyword or phrase you want to search for.");
		document.getElementById("advancedsearchbutton").disabled=false;
		document.getElementById("advancedsearch").value="";
		document.getElementById("advancedsearch").focus();
		return false;
	}
	else
	{
		document.getElementById("advancedsitesearch").submit();
	}
}