var winn;
	function abrirFlotante(cual,wid,heig,scrol){	
		var LeftP = (screen.width) ? (screen.width-wid) / 2 : 0;
		var TopP = (screen.height) ? (screen.height-heig) / 2 : 0;
		if(winn){
			if(!winn.closed) winn.close();
			winn = null;
		}
		window.focus();
		winn=eval("open('"+cual+"','','width="+wid+",height="+heig+",top="+TopP+",left="+LeftP+",scrollbars="+scrol+"')");
	}
	
	function rollover_on(cual,n)
	{
		document.getElementById(cual+n).src = "img/" + cual + "_roll.gif"
	}
	
	function rollover_off(cual,n)
	{
		document.getElementById(cual+n).src = "img/" + cual + ".gif"
	}
function MM_changeProp(objName,theProp,theValue) { //v3.0
  var obj = MM_findObj(objName);
  if (obj && (theProp.indexOf("style.")==-1 || obj.style)) eval("obj."+theProp+"='"+theValue+"'");
}

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;
}