rollovers = function( off, on ){
  img = document.getElementsByTagName("img"); p = [];
  off_reg = new RegExp(off+"(\.[a-z]+$)","i"); on_reg = new RegExp(on+"(\.[a-z]+$)","i" );
  for(var x=0,i;i=img[x];x++){
    if(i.src.match(off_reg)){
      p[x] = new Image(); p[x].src = i.src.replace(off_reg, on+"$1");
      i.onmouseover = function(){ this.src = this.src.replace(off_reg,on+"$1"); }; i.onmouseout = function(){ this.src = this.src.replace(on_reg,off+"$1"); };
    };
  };
};

window.onload = function(){
  rollovers( "_o" , "_h" );
} 


function scrollToPageTop () {
	if (window.scrollTo) {
	window.scrollTo (0, 0);

	return false;
	} else {
	return true;
	}
}