function noenter() {
  return !(window.event && window.event.keyCode == 13); 
}
  
function setTransparencyHov(obj) {
	opacity=0.5;		 
	 // IE/Win 
	 obj.style.filter = "alpha(opacity:"+opacity*100+")";
	  // Safari<1.2, Konqueror
	  obj.style.KHTMLOpacity = opacity;
	    // Older Mozilla and Firefox
	 obj.style.MozOpacity = opacity; 
		 // Safari 1.2, newer Firefox and Mozilla, CSS3 
	obj.style.opacity = opacity; 
}
function setOpacityHov(obj) {
	opacity=1;		 
	 // IE/Win 
	 obj.style.filter = "alpha(opacity:"+opacity*100+")";
	  // Safari<1.2, Konqueror
	  obj.style.KHTMLOpacity = opacity;
	    // Older Mozilla and Firefox
	 obj.style.MozOpacity = opacity; 
		 // Safari 1.2, newer Firefox and Mozilla, CSS3 
	obj.style.opacity = opacity; 
}