//precarga de imagenes//


function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

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_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}


//mostrar esconder capas//


var state = 'hidden';

function showhide(layer_ref) {

	
	
	if (state == 'visible') {
		state = 'hidden';
	}
	else {
		state = 'visible';
	}
	if (document.all) { //IS IE 4 or 5 (or 6 beta)
		eval( "document.all." + layer_ref + ".style.visibility = state");
	}
	if (document.layers) { //IS NETSCAPE 4 or below
		document.layers[layer_ref].visibility = state;
	}
	if (document.getElementById && !document.all) {
		maxwell_smart = document.getElementById(layer_ref);
	maxwell_smart.style.visibility = state;
	}
}






 //para los forms quitar la palabra que viene por defecto//
 
 
 
 function checkLogin(tf) {

    if (formatoCorrectoLogin(tf)) tf.submit();

}


function formatoCorrectoLogin (tf) {
	if (tf.loginname.value == '') {
		alert("Faltan datos obligatorios");
		return false;
	}
	if (tf.loginPassword.value == '') {
		alert("Faltan datos obligatorios");
		return false;
	}
	
	return true;
}



function checkSearchform(errorMsg) {
	
		if (document.searchform.keywords.value == '') {
			alert (errorMsg);
			return false;
		} else {
			document.searchform.submit();
			return true;
		}
		
	
	}
	
	
Array.prototype.inArray = function (value) {

	var i;
	
	

	for (i=0; i < this.length; i++) {

		if (this[i] === value) {
			
			return true;

		}

	}

	return false;

};	
	
	
        


// capas

<!--
function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);
//-->