function Preload(img)

{

	var a=new Image(); a.src=img; return a;

}

if (document.images) 

{

menu1up=Preload("graphics/profileup.gif")

menu1dn=Preload("graphics/profiledn.gif")

menu2up=Preload("graphics/silentup.gif")

menu2dn=Preload("graphics/silentdn.gif")

menu3up=Preload("graphics/ebup.gif")

menu3dn=Preload("graphics/ebdn.gif")

menu4up=Preload("graphics/contactup.gif")

menu4dn=Preload("graphics/contactdn.gif")

esslogoup=Preload("graphics/esslogoup.gif")

esslogodn=Preload("graphics/esslogodn.gif")

}

function chgImg(imgField,newImg) {

	if (document.images) {

		document[imgField].src= eval(newImg + ".src")

	}

}

function butup(imgName)

{

	if(document.images) 

	document[imgName].src=eval(imgName+"up.src");

}

function butdn(imgName) 

{

	if(document.images)

	document[imgName].src=eval(imgName+"dn.src");

}

var win = null;

function NewWindow(mypage,myname,w,h,scroll){

LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;

TopPosition = (screen.height) ? (screen.height-h)/2 : 0;

settings =

'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable'

win = window.open(mypage,myname,settings)

if(win.window.focus){win.window.focus();}

}