function over(img){
      img.src=img.src.replace("_over.gif",".gif");
		img.src=img.src.replace(".gif","_over.gif");
    }
    function out(img){
      img.src=img.src.replace("_over.gif",".gif");
    }

    function MM_findObj(n, d) { //v4.01
      var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
        d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
      if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
      for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
      if(!x && d.getElementById) x=d.getElementById(n); return x;
    }
    function MM_showHideLayers() { //v6.0
      var i,p,v,obj,args=MM_showHideLayers.arguments;
      for (i=0; i<(args.length-2); i+=3) 
			if ((obj=MM_findObj(args[i]))!=null) {
				v=args[i+2];
				if (obj.style) { 
					obj=obj.style; 
					v=(v=='show')?'visible':(v=='hide')?'hidden':v; 
				}
				obj.visibility=v; 
			}
    }
    function altShow(name){
      altHideAll();
      MM_showHideLayers(name,'','show');
    }
    function altHideAll(){
			MM_showHideLayers(
        'alt_maiscont','','hide',
        'alt_nitromail','','hide',
        'alt_nitroblog','','hide',
        'alt_nitrosites','','hide',
        'alt_discovirt','','hide',
        'alt_nitro','','hide',
        'alt_maistv','','hide',
				'dhtml_mais','','hide',
				'grande','','hide'
        );
    }
    
    function clearKword(obj){
      if(obj.value=='Palavra-chave')
        obj.value="";
    }