// JavaScript Document

	function roll_on (img_name)
	{
		var v_img = eval( 'document.'+img_name);
		v_img.src='images/'+img_name+'_on.GIF';	
		
	}
	function roll_off (img_name)
	{
		var v_img = eval( 'document.'+img_name);
		v_img.src='images/'+img_name+'_off.GIF';
	}
	 
function NewWindow(mypage, myname, w, h, scroll) {
var winl = (screen.width - w) / 2;
var wint = (screen.height - h) / 2;
winprops = 'height='+h+',width='+w+',top=0,left='+winl+',scrollbars='+scroll+',resizable'
win = window.open(mypage, myname, winprops)
if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}