var preload = new Array();
  preload[0]=getImage("images/nav_listen.gif");
  preload[1]=getImage("images/nav_listen_over.gif");
  preload[2]=getImage("images/nav_about_us.gif");
  preload[3]=getImage("images/nav_about_us_over.gif");
  preload[4]=getImage("images/nav_profiles.gif");
  preload[5]=getImage("images/nav_profiles_over.gif");
  preload[6]=getImage("images/nav_gallery.gif");
  preload[7]=getImage("images/nav_gallery_over.gif");
  preload[8]=getImage("images/nav_events.gif");
  preload[9]=getImage("images/nav_events_over.gif");
  preload[10]=getImage("images/nav_contact_us.gif");
  preload[11]=getImage("images/nav_contact_us_over.gif");
  preload[12]=getImage("images/nav_home.gif");
  preload[13]=getImage("images/nav_home_over.gif");
  preload[14]=getImage("images/nav_news.gif");
  preload[15]=getImage("images/nav_news_over.gif");
  preload[16]=getImage("images/nav_chat_room.gif");
  preload[17]=getImage("images/nav_chat_room_over.gif")
  preload[18]=getImage("images/nav_boards.gif");
  preload[19]=getImage("images/nav_boards_over.gif");

 function getImage(strImageName){
        var img = new Image();
        img.src = strImageName;
        return img;
 }

	function swap(image_name) {

			document.images[image_name].src='images/'+image_name+'_over.gif';
			}


	function restore(image_name){

			document.images[image_name].src='images/'+image_name+'.gif';
			}
			
			
function variableWin(url,winName,width,height){

var x = screen.width;
var y = screen.height;
var top = parseInt((y-height)/2);
var left = parseInt((x-width)/2);

var options="width="+width+",height="+height+",resizable=yes,toolbar=no,location=no,directories=no,status=no,scroll=yes,scrollbars=auto,menubar=no,left="+left+",top="+top+""
var contentWin=window.open(url,winName,options);
contentWin.focus();

}

function variableWinScroll(url,winName,width,height){

var x = screen.width;
var y = screen.height;
var top = parseInt((y-height)/2);
var left = parseInt((x-width)/2);

var options="width="+width+",height="+height+",resizable=yes,toolbar=no,location=no,directories=no,status=no,scroll=yes,scrollbars=yes,menubar=no,left="+left+",top="+top+""
var contentWin=window.open(url,winName,options);
contentWin.focus();
}