function change_w(id, pixels) {
     var x = document.getElementById(id);
     x.style.width = x.offsetWidth + pixels + "px";
}
function change_h(id, pixels) {
     var x = document.getElementById(id);
     x.style.height = x.offsetHeight + pixels + "px";
}
 
/*This function is meant to be used when you are needing
faux getElementsByName() in IE. IE seems so use the 'id'
attribute instead of 'name' when you use getElementsByName().
 
tag = This tag name that the 'name' attribute you want to 
      get is attached to. Like if you called getElementsByTagName().
      
name = The value of the 'name' attribute you want.
*/
function getElementsByName_iefix(tag, name) {
     var elem = document.getElementsByTagName(tag);
     var arr = new Array();
     for(i = 0, iarr = 0; i < elem.length; i++) {
          att = elem[i].getAttribute("name");
          if(att == name) {
               arr[iarr] = elem[i];
               iarr++;
          }
     }
     return arr;
}
 
/*This function resets the height and width of the background
to that of it's parent element's height and width.
 
tbg_id = This is the value of the name attribute you named all your
         backgrounds.
*/
function transparentbg(tbg_id) {
     var bak = getElementsByName_iefix("div", tbg_id);
     for(i = 0; i < bak.length; i++) {
          bak[i].style.height = bak[i].parentNode.clientHeight + "px";
          bak[i].style.width  = bak[i].parentNode.clientWidth + "px";
     }
}