// Mouseover, Mouseclick functions for horizontal navigation images

if (document.images)
			{    
		
	energyon = new Image;
	energyon.src = "images/nav/energy-on.gif";
	energyoff = new Image;
	energyoff.src = "images/nav/energy-off.gif";
	energypress = new Image;
	energypress.src = "images/nav/energy-on.gif";
		
	landdevelopmenton = new Image;
	landdevelopmenton.src = "images/nav/land-development-on.gif";
	landdevelopmentoff = new Image;
	landdevelopmentoff.src = "images/nav/land-development-off.gif";
	landdevelopmentpress = new Image;
	landdevelopmentpress.src = "images/nav/land-development-on.gif";
	
	transportationon = new Image;
	transportationon.src = "images/nav/transportation-on.gif";
	transportationoff = new Image;
	transportationoff.src = "images/nav/transportation-off.gif";
	transportationpress = new Image;
	transportationpress.src = "images/nav/transportation-on.gif";
	
	waterresourceson = new Image;
	waterresourceson.src = "images/nav/water-resources-on.gif";
	waterresourcesoff = new Image;
	waterresourcesoff.src = "images/nav/water-resources-off.gif";
	waterresourcespress = new Image;
	waterresourcespress.src = "images/nav/water-resources-on.gif";
	
	serviceson = new Image;
	serviceson.src = "images/nav/our-services-on.gif";
	servicesoff = new Image;
	servicesoff.src = "images/nav/our-services-off.gif";
	servicespress = new Image;
	servicespress.src = "images/nav/our-services-on.gif";
	
	projectson = new Image;
	projectson.src = "images/nav/our-projects-on.gif";
	projectsoff = new Image;
	projectsoff.src = "images/nav/our-projects-off.gif";
	projectspress = new Image;
	projectspress.src = "images/nav/our-projects-on.gif";
		
	}
		
		
var thisPage = "";

//function setcurrent(page){

//	img_press(page);
//	thisPage = page;
//	
//}

function setcurrent(category_tag)
{

    if ( document.getElementById(category_tag) != null )
    {

        var categoryID = document.getElementById(category_tag).value;
        var page;

        if ( categoryID > 0 ) 
        { 

             switch(categoryID)
             {
             
                case '1':
                page = 'energy'
                break
                
                case '2':
                page = 'landdevelopment'
                break
                
                case '3':
                page = 'waterresources'
                break
                
                case '4':
                page = 'transportation'
                break     
                   
                case '5':
                page = 'services'
                break
                
                case '6':
                page = 'projects'
                break        
                
             }
         
         }
         else if ( categoryID != '' )
         {
         
            page = categoryID
            
         }
        
	    img_press(page);
	    thisPage = page;	
	
	}
}

function img_act(imgName)
{
    if (document.images)
    {
        imgOn = eval(imgName + "on.src");
		imgPress = eval(imgName + "press.src");
		imgSrc = document [imgName].src;
		if (imgSrc != imgPress && imgName != thisPage){
			document [imgName].src = imgOn;
		}
        
    }
}

function img_inact(imgName)
{
    if (document.images && imgName != thisPage)
    {
        imgOff = eval(imgName + "off.src");
        document [imgName].src = imgOff;
    }
}

function img_press(imgName)
{
    if (document.images && imgName != thisPage)
    {           
            try       
            {
                imgPress = eval(imgName + "press.src");
                document [imgName].src = imgPress;       
            }
            catch( err )
            {
            
            }
    }
}


// Window opener centered
// sample code <a href="javascript:centeredWindow('linkhere.html','popup','860','600')" class="">


function centeredWindow(mypage, myname, w, h, scroll) {
var winl = (screen.width - w) / 2;
var wint = (screen.height - h) / 2;
winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars=yes,resizable=yes'
win = window.open(mypage, myname, winprops)
if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}

// Window opener centered with additional window dressings
function centeredWindow2(mypage, myname, w, h, scroll) {
var winl = (screen.width - w) / 2;
var wint = (screen.height - h) / 2;
winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars=yes,resizable=yes,location=yes,menubar=yes'
win = window.open(mypage, myname, winprops)
if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}