(function($) {
  var cache = [];
  // Arguments are image paths relative to the current page.
  $.preLoadImages = function() {
    var args_len = arguments.length;
    for (var i = args_len; i--;) {
      var cacheImage = document.createElement('img');
      cacheImage.src = arguments[i];
      cache.push(cacheImage);
    }
  }
})(jQuery)

$.urlParam = function(name){ 
var results = new RegExp('[\\?&]' + name + '=([^&#]*)').exec(window.location.href); 
if (!results) { return 0; } 
return results[1] || 0;} 

/* custom search */
function CustomSubmitSearchRedirect(strUrl)
{
    var frm=document.forms["frmSiteSearch"];
    frm=document.forms[MSOWebPartPageFormName];
    var searchText=frm.elements["CustomSearchString"].value;
    var searchScope=frm.elements["CustomSearchScope"].value;
    strUrl=strUrl+"?k="+escapeProperly(searchText)+"&u="+escapeProperly(searchScope);
    window.location = strUrl;
}
 
function CustomSearchKeyDown(event, strUrl)
{
    if (IsKeyDownSubmit(event))
    {
        SubmitCustomSearchRedirect(strUrl);
        return false;
    }
    return true;
}

/* dynamically add css pages */
function loadjscssfile(filename, filetype){
 if (filetype=="js"){ //if filename is a external JavaScript file
  var fileref=document.createElement('script')
  fileref.setAttribute("type","text/javascript")
  fileref.setAttribute("src", filename)
 }
 else if (filetype=="css"){ //if filename is an external CSS file
  var fileref=document.createElement("link")
  fileref.setAttribute("rel", "stylesheet")
  fileref.setAttribute("type", "text/css")
  fileref.setAttribute("href", filename)
 }
 if (typeof fileref!="undefined")
  document.getElementsByTagName("head")[0].appendChild(fileref)
}


/* browser detection */
var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{
			string: navigator.userAgent,
			subString: "Chrome",
			identity: "Chrome"
		},
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari",
			versionSearch: "Version"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			   string: navigator.userAgent,
			   subString: "iPhone",
			   identity: "iPhone/iPod"
	    },
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();

/* preload images */
$.preLoadImages("../pictures/site/social/facebook32x32_on.gif", "../pictures/site/social/twitter32x32_on.gif","../pictures/site/social/linkedin32x32_on.gif" );
	
	
$(document).ready(function(){					

	/* load styles based on specific browsers */
	if(BrowserDetect.browser=="Firefox"){
		loadjscssfile("../css/ffonly.css", "css");
	}else if(BrowserDetect.browser=="Explorer"&&BrowserDetect.version<=7){
		loadjscssfile("../css/ie7.css", "css");
	}else if(BrowserDetect.browser=="Explorer"&&BrowserDetect.version==8){
		loadjscssfile("../css/ie8.css", "css");
	}

	/* hide div based on url */
	if (document.location.href.indexOf('sierralobo.com') < 0) {
		$('#loginutilities').show();
	}

	$('img.rollover').hover(
		function()
		{
			this.src = this.src.replace("_off","_on");
		},
		function()
		{
			this.src = this.src.replace("_on","_off");
		}
	);
	
	$('#nav a')
		.css( {backgroundPosition: "0px 41px"} )
		.mouseover(function(){
			$(this).stop().animate({backgroundPosition:"(0px 94px)"}, {duration:500})
		})
		.mouseout(function(){
			$(this).stop().animate({backgroundPosition:"(0px 41px)"}, {duration:200, complete:function(){
				$(this).css({backgroundPosition: "0px 41px"})
			}})
		})
		
	$(" #nav ul ").css({display: "none"}); // Opera Fix
	$(" #nav li").hover(function(){
			$(this).find('ul:first').css({visibility: "visible",display: "none"}).show(500);
			},function(){
			$(this).find('ul:first').css({visibility: "hidden"});
			});
			
});