// JavaScript

function muestra(id){document.getElementById(id).style.visibility='visible';}
function oculta(id){document.getElementById(id).style.visibility='hidden';}
function liga(liga){document.location.href=liga;}
function ponFecha(id,muestra){
	//muestra 
	//	0 hora
	//	1 fecha
	var fe;
	d = new Date();
	fe="";
	if(muestra>1 || muestra<0)muestra=0;
	if(muestra==0){
		muestra=1;
		hr = d.getHours();
		minu=d.getMinutes();
		if(hr>=12)
			fe="pm";
		else fe="am";
		
		if(hr>12)hr=hr-12;
		if(hr<10)hr='0'+hr;
		if(minu<10)minu='0'+minu;
		fe = hr+" : "+minu+" "+fe;
	}
	else if(muestra==1){
		muestra=0;
		fe = d.getDate()+"  ";
		switch( d.getMonth() ){
			case 0:
				fe = fe+"ENE";
				break;
			case 1:
				fe = fe+"FEB";
				break;
			case 2:
				fe = fe+"MAR";
				break;
			case 3:
				fe = fe+"ABR";
				break;
			case 4:
				fe = fe+"MAY";
				break;
			case 5:
				fe = fe+"JUN";
				break;
			case 6:
				fe = fe+"JUL";
				break;
			case 7:
				fe = fe+"AGO";
				break;
			case 8:
				fe = fe+"SEP";
				break;
			case 9:
				fe = fe+"OCT";
				break;
			case 10:
				fe = fe+"NOV";
				break;
			case 11:
				fe = fe+"DIC";
				break;
			default:
				fe = fe+"ENE";
				break;
		}
		fe =fe+" "+( d.getYear().toString().substr(d.getYear().toString().length-2) );
	}
	document.getElementById(id).value=fe;
	setTimeout("ponFecha('"+id+"',"+muestra+")",2000);
}
function ponFoco(id){document.getElementById(id).focus();}

function isDefined(ckVar){
	var DEFINED_V=true;
	function handleError() {
		DEFINED_V=false;
		return true;
	}
	var oldOnError=window.onerror;
	window.onerror=handleError;
	try { 
		eval(ckVar);
	}catch (e) 
	{ DEFINED_V=false;}

	window.onerror=oldOnError;
	return DEFINED_V;
}