//this script is for the navigation

browser = (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 3 )) ||
((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )))
if (browser) {
	normal = new MakeArray(11)
	roll = new MakeArray(11)
	
	normal[1].src = "/images/buttons/but_new_off.gif"
	normal[2].src = "/images/buttons/but_about_off.gif" 
	normal[3].src = "/images/buttons/but_govs_off.gif" 
	normal[4].src = "/images/buttons/but_programs_off.gif" 
	normal[5].src = "/images/buttons/but_corres_off.gif"
	normal[6].src = "/images/buttons/but_northeast_off.gif"
	normal[7].src = "/images/buttons/but_toxics_off.gif"
	normal[8].src = "/images/buttons/but_home_off.gif"
	normal[9].src = "/images/buttons/but_site2_off.gif"
	normal[10].src = "/images/buttons/but_search2_off.gif"
	normal[11].src = "/images/buttons/but_home2_off.gif"
	
	roll[1].src = "/images/buttons/but_new_on.gif"
	roll[2].src = "/images/buttons/but_about_on.gif" 
	roll[3].src = "/images/buttons/but_govs_on.gif" 
	roll[4].src = "/images/buttons/but_programs_on.gif" 
	roll[5].src = "/images/buttons/but_corres_on.gif"
	roll[6].src = "/images/buttons/but_northeast_on.gif"
	roll[7].src = "/images/buttons/but_toxics_on.gif"
	roll[8].src = "/images/buttons/but_home_on.gif"
	roll[9].src = "/images/buttons/but_site2_on.gif"
	roll[10].src = "/images/buttons/but_search2_on.gif"
	roll[11].src = "/images/buttons/but_home2_on.gif"
}

function MakeArray(n) {
	this.length = n
	for (var i = 1; i<=n; i++) {
		this[i] = new Image()
	}
	return this
}

function msover(num) {
	if ( browser) { 
		loadImage = "Image" + num;
		document.images[loadImage].src = roll[num].src
	}
}

function msout(num) {
	if ( browser) {
		loadImage = "Image" + num;
		document.images[loadImage].src = normal[num].src
	}
}