function Identificate() {
    var myIframe = document.getElementById('login_box');
    if (myIframe) {
        myIframe.style.display = "block";
    }
    myIframe = document.getElementById('lostpwd_box');
    if (myIframe) {
        myIframe.style.display = "none";
    }
}

function LostPwd() {
    var myIframe = document.getElementById('login_box');
    if (myIframe) {
        myIframe.style.display = "none";
    }
    var myIframe = document.getElementById('lostpwd_box');
    if (myIframe) {
        myIframe.style.display = "block";
    }
}


function refresh_url(url)
{
   document.location=url;
}

function getInternetExplorerVersion()
// Returns the version of Internet Explorer or a -1
// (indicating the use of another browser).
{
  var rv = -1; // Return value assumes failure.
  if (navigator.appName == 'Microsoft Internet Explorer')
  {
    var ua = navigator.userAgent;
    var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
    if (re.exec(ua) != null)
      rv = parseFloat( RegExp.$1 );
  }
  return rv;
}

function change_height( id ) {
    var myIframe = document.getElementById(id);
    if (myIframe) {
		if(getInternetExplorerVersion() == 8 ) {
            myIframe.style.height = myIframe.Document.body.scrollHeight +"px";
            myIframe.style.display="block";
		} else {
	        if ( myIframe.contentDocument && myIframe.contentDocument.body.offsetHeight) {
	            // W3C DOM (and Mozilla) syntax
	            myIframe.style.height = myIframe.contentDocument.body.offsetHeight + 20 + "px";
	            myIframe.style.display="block";
	        } else if (myIframe.Document && myIframe.Document.body.scrollHeight) {
	            // IE DOM syntax
	            
	            myIframe.style.height = myIframe.Document.body.scrollHeight + 50 + "px";
	            myIframe.style.display="block";
	        }
	    }
    }
}

function change_height_obj( myIframe ) {
    if (myIframe) {
		if(getInternetExplorerVersion() == 8 ) {
            myIframe.style.height = myIframe.Document.body.scrollHeight +2+"px";
            myIframe.style.display="block";
		} else {
	        if (myIframe.contentDocument && myIframe.contentDocument.body.offsetHeight) {
	            // W3C DOM (and Mozilla) syntax
	            myIframe.style.height = myIframe.contentDocument.body.offsetHeight + "px";
	            myIframe.style.display="block";
	        } else if (myIframe.Document && myIframe.Document.body.scrollHeight) {
	            // IE DOM syntax
	            myIframe.style.height = myIframe.Document.body.scrollHeight +2+"px";
	            myIframe.style.display="block";
	        }
	    }
    }
}

function SeleccionaParticipar( nummen, nombre, url )
{
	for ( i = 1; i < 10 ; i++ ) {
		var o = document.getElementById( 'participamenu' + i );
		if (o) {
			if ( i == nummen )
				o.className = 'cajaparticipa_sel';
			else
				o.className = 'cajaparticipa';
		}
	}
	MostrarVentana( nombre, url );
}

function MostrarVentana( nombre, url )
{
	a = document.getElementById(nombre);
	a.src = url;
	a.style.display = 'block';	
}

function MuestraDivSobreImg( nombrediv, nombreimg )
{
	a = document.getElementById(nombrediv);
	if ( a ) {
		b = document.getElementById(nombreimg);
		if ( b ) {
			a.style.display = 'block';	
		}
	}
}

function MuestraMenu( nombre, numero )
{
	name = nombre + numero;
	b = document.getElementById( 'catdespori' + numero );

	a = document.getElementById(name);
	if ( a ) {
		//if (a.style.display == 'none' || a.style.display == '') {
			a.style.display = 'block';
			a.style.position = 'absolute';
			a.style.left = b.offsetLeft +  'px';
			a.style.top = (b.offsetTop + 16) + 'px';
		//} else {
		//	a.style.display = 'none';
		//}
	}
	for ( i = 1 ; i < 10 ; i++ ) {
		if ( i != numero ) {
			name = nombre + i;
			a = document.getElementById(name);
			if ( a ) {
				a.style.display = 'none';
			}
		}
	}
}

function OcultaMenu( nombre )
{
	a = document.getElementById(nombre);
	a.style.display = 'none';	
}

function MuestraDiv( nombre )
{
	a = document.getElementById(nombre);
	if ( a ) {
		a.style.position = 'absolute';
		a.style.display = 'inline';	
		a.style.left = "5px";
	}
}

function OcultaDiv( nombre )
{
	a = document.getElementById(nombre);
	a.style.display = 'none';	
}


function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*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 change_height2( id, but ) {
    var myDiv = document.getElementById(id);
	if ( myDiv.style.display == "block" ) {
		myDiv.style.display = "none";
		createCookie( id, "none", 1 );
		
	} else {
		createCookie( id, "block", 1 );
		myDiv.style.display = "block";
	}
}

function Meneame( url ) {
	window.open( 'http://meneame.net/submit.php?url='+url );
}

function Digg( url, title ) {
	window.open( 'http://digg.com/submit?phase=2&url='+url+'&title='+title );

}

function Facebook( url, title ) {
	window.open( 'http://www.facebook.com/sharer.php?u='+url );

}