var path = path_modifier + "graphics/buttons/"
var iswap = false

if(document.images)
{    
  iswap = true;
}

function i_chng(iname, state, layer_modifier)
{
  if (iswap) {
    var fname = iname
	var sepPos = fname.indexOf('*')
    if (sepPos != -1) {
	  fname = fname.substring(0,sepPos)
	}
	sepPos = fname.indexOf('#')
	var forcechng = false
    if (sepPos == 0) {
	  forcechng = true
	  fname = fname.substring(1,fname.length)
	  iname = iname.substring(1,iname.length)
	}
	if (document[layer_modifier + iname]) {
      if ((forcechng) || ((document[layer_modifier + iname].src.indexOf(layer_modifier + fname + "_hi.gif") == -1) && (document[layer_modifier + iname].src.indexOf(layer_modifier + fname + "_grey.gif") == -1))) {
        document[layer_modifier + iname].src= (path + layer_modifier + fname + state + ".gif");
	  }
	}
  }
}

function b_chng(obj, iname, state, layer_modifier)
{
  if (iswap) {
    obj.src = (path + layer_modifier + iname + state + ".gif");
  }
}