function changeCell(obj){
	if(obj)  {
		obj.style.backgroundColor = "#F6F6BF";
		obj.style.border  = "1px dashed black";
	}
}

function restoreCell(obj){
	if(obj)  {
		obj.style.backgroundColor = "#F6EFC9";
		obj.style.border  = "1px dotted #600";

	}
}

function checkContactUs(theForm)  {
    var why = "";
    why += checkForNull(theForm.nombre.value, "Nombre");
    why += checkForNull(theForm.apellido.value, " Apellido");
    why += checkEmail(theForm.email.value);

    if (why != "") {
       alert(why);
       return false;
    }
	  return true;
}

function checkForNull(strng, fieldName)  {
	var error = "";
  if (strng == "") {
  	error = "Por favor ingrese un " +  fieldName + " valido \n";
 	}
 	return error;
}

function checkEmail(strng)  {
	var illegalChars= /[\(\)\<\>\,\;\:\\\/\"\[\]]/;
	if (strng.match(illegalChars)) {
  	error = "El correo electronico contiene caracteres ilegales.\n";
	}
	var error = "";
	var emailFilter=/^.+@.+\..{2,3}$/;
	if (!(emailFilter.test(strng))) { 
		error = "Por favor ingrese una direccion electronica valida.\n";
	}
	return error;
}

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_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;
}

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];}
}