// Funciones necesarias para el sitio
// 18 de febrero 2010
// Hector Centeno

// permission is granted to use this javascript provided that the below code is not altered
function fnSubmit(){
	var searchname= 'busquedas.html';
	var keytext=searchname+'?keywords=';
	var andtext='&and=';
	
	searchsite=document.searchform.searchsite.value; 
	while (searchsite.indexOf(" ")>-1){ 
		pos=searchsite.indexOf(" ");
		searchsite=searchsite.substring(0,pos)+"+"+searchsite.substring(pos+1);
	}
	document.location=keytext+searchsite+andtext+"0";
}

function getURLVar(urlVarName) {
	//divide the URL in half at the '?' 
	var urlHalves = String(document.location).split('?');
	var urlVarValue = '';
	if(urlHalves[1]){
		//load all the name/value pairs into an array 
		var urlVars = urlHalves[1].split('&');
		//loop over the list, and find the specified url variable 
		for(i=0; i<=(urlVars.length); i++){
			if(urlVars[i]){
				//load the name/value pair into an array 
				var urlVarPair = urlVars[i].split('=');
				if (urlVarPair[0] && urlVarPair[0] == urlVarName) {
					//I found a variable that matches, load it's value into the return variable 
					urlVarValue = urlVarPair[1];
				}
			}
		}
	}
	return urlVarValue;   
}
function toggle_visibility(id) {
   var e = document.getElementById(id);
   if(e.style.display == 'block')
      e.style.display = 'none';
   else
      e.style.display = 'block';
}