function createCookie(name,value,hours) {
	if (hours) {
	var date = new Date();
	date.setTime(date.getTime()+(hours*60*60*1000));
	var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
	}
        
function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
		}
	return null;
	}
        
function eraseCookie(name) {
	createCookie(name,"",-1);
	}
 
function toggle_visibility(id) {
	var e = document.getElementById(id);
	if(e.style.display == 'block'){
		e.style.display = 'none';
		createCookie('eStyleDisplay','none',7)
		document.getElementById('imgToToggle').src='http://www.planetaidea.com.ar/img/off.jpg';
	}
	else{
		e.style.display = 'block';
		createCookie('eStyleDisplay','block',7)
		document.getElementById('imgToToggle').src='http://www.planetaidea.com.ar/img/on.jpg';
		}
}
 
// to get the value just do
 
function getCookieData(name){
    var x = readCookie(name)
	if (x) {
		// next file its just for testing
		document.getElementById('cookieData').innerHTML=x;
		document.getElementById('testdiv').style.display=x;
    	}
    if (x=='block'){
	    document.getElementById('imgToToggle').src='http://www.planetaidea.com.ar/img/on.jpg';
    }
	else{
		document.getElementById('imgToToggle').src='http://www.planetaidea.com.ar/img/off.jpg';
	    }
	}