var roImages=new Array(8);

//Indexing constants

var tnOne=0;
var tnTwo=1;
var tnThree=2;
var tnFour=3;
var tnFive=4;
var redlight=5;
var redlightlarge=6;
var redNavButton=7;

var lnRollOver=new Array(2);

var currentPage=null;

if (document.images)
{

	//Left nav images
    lnRollOver[0]=new Image();
    lnRollOver[0].src="/im/greenlight.gif";
    lnRollOver[0].name="greenlight";

    lnRollOver[1]=new Image();
    lnRollOver[1].src="/im/redlight.gif";
    lnRollOver[1].name="redlight";
	
    //Top nav roll over images;
    roImages[0]=new Image();
    roImages[0].src="/im/red1.gif";
    roImages[0].name="one_red";

    roImages[1]=new Image();
    roImages[1].src="/im/red2.gif";
    roImages[1].name="two_red";

    roImages[2]=new Image();
    roImages[2].src="/im/red3.gif";
    roImages[2].name="three_red";

    roImages[3]=new Image();
    roImages[3].src="/im/red4.gif";
    roImages[3].name="four_red";

    roImages[4]=new Image();
    roImages[4].src="/im/red5.gif";
    roImages[4].name="five_red";

    //Left nav images
    roImages[5]=new Image();
    roImages[5].src="/im/redlight.gif";
    roImages[5].name="redlight";

    //Subscribe images
    roImages[6]=new Image();
    roImages[6].src="/im/redlightlarge.gif";
    roImages[6].name="redlightlarge";

    //Subscribe images
    roImages[7]=new Image();
    roImages[7].src="/im/red_nav_button.gif";
    roImages[7].name="redNavButton";
}

function swapImage(a,b)
{

if (document.images)
    {
        //store the url
        var temp=document.images[a].src;
        document.images[a].src=roImages[b].src;
        //keep the source url here for easy image toggling
        roImages[b].src=temp;
    }
}


function changeImage(a,b,c)
{
if (document.images)
    {
        //store the url
        document.images[a].src=b[c].src;
    }
}


function swapImage2(a,b,c)
{
if (document.images)
    {
        //store the url
        var temp=document.images[a].src;
        document.images[a].src=b[c].src;

        b[c].src=temp;
        //document.images[a].src=eval(b+'['+c+']'+'.src');
        //keep the source url here for easy image toggling
        //Image i=eval(b+'['+c+']');
        //i.src=temp;
    }
}


function changeContent(el, ih, param)
{
    var elm=document.getElementById(el);
    elm.setAttribute("src", ih);
    currentPage=ih;
}



function test_email() 
{
        email_type = /^[a-z0-9][a-z0-9_\.-]*@[a-z0-9][a-z0-9_\.-]*\.([a-z]{2}|com|org|net|mil|gov|edu|biz|info|name)$/i;
        if (! email_type.test(document.getElementById("email").value)) 
        {
                alert("Invalid email address...  ");
                return false; 
        } 
}
        
function clear_email() 
{
if (document.email_form.email.value == "your email") 
        {
	document.email_form.email.value = ""; 
        } 
}