// JavaScript Document

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];}
}
function MM_showHideLayers() { //v9.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) 
  with (document) if (getElementById && ((obj=getElementById(args[i]))!=null)) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'block':(v=='hide')?'none':v; }
    obj.display=v; }
}

function HideSelectboxes()
{
  if (!document.getElementsByTagName)
  { return; }
  var anchors = document.getElementsByTagName("select");

 
  for (var i=0; i<anchors.length; i++)
  {
    var anchor = anchors[i];
    anchor.style.visibility='hidden';
  }
}
function ShowSelectboxes()
{
  if (!document.getElementsByTagName)
  { return; }
  var anchors = document.getElementsByTagName("select");

 
  for (var i=0; i<anchors.length; i++)
  {
    var anchor = anchors[i];
    anchor.style.visibility='visible';
  }
}

function formChecker(theForm) {

	var allvalid = false;
	var alertstr = "";
	var num_of_elements = theForm.length;
	var radio_selected = false;
	var checkbox_selected = false;

	for (var i=0; i<num_of_elements; i++) {
		var theElement = theForm.elements[i];
		var element_type = theElement.type;
		var element_name = theElement.name;
		var element_value = theElement.value;
		
		
  // Check Text boxes ...
  if (!allvalid) {
		if (element_type == "text") {
			if (element_value.length == 0) {
				allvalid = false;
			} else {
				allvalid = true;
			}
		}
	}
		
		if (document.getElementById("test_xml") != null) {
			if (document.getElementById("test_xml").value.length != 0) {
				allvalid = true;
			}
		}

  // Check Drop-down lists ...
  	if (!allvalid) {  		
  		if ((element_type.indexOf("select") > -1) && (element_name != "SO") && (element_name != "P11") && 
  			(element_name != "items") && (element_name != "P19") && (element_name != "P6Picker") && (element_name != "O1")
  			&& (element_name != "O14")&& (element_name != "O15")&& (element_name != "O16")&& (element_name != "O17")) {
			var index = theElement.selectedIndex;
			if (index <= 0) {
				allvalid = false;
			} else {
				allvalid = true;
			}
		}
	}
  // Check Radio buttons ...
		if (element_type == "radio" ) {
			if (theElement.checked == true) {
				radio_selected = true;
			}
		}

 // Check Checkboxes ...
 	if (!allvalid) {
		if (element_type == "checkbox") {
			if (theElement.checked == true) {
				allvalid = true;
			}
		}
	}
 }

 // All elements checked - now determine if form is OK ...
	if (allvalid) {
		return true;
	} else {
		alert ("Por favor ingrese criterios adicionales.");
		return false;
	}
 }