// JavaScript Document
//function for rollover
function roll(img_name, img_src)
   {
   document[img_name].src = img_src;
   }
   
   
 //preload images used in rollovers  
   var myimages = new Array();
function preloading(){
for (x=0; x<preloading.arguments.length; x++){
myimages[x] = new Image();
myimages[x].src = preloading.arguments[x];
}
}
preloading("buttons/map_btn_over.gif");