function Set_Cookie( name, value, expires, path, domain, secure ) 
{
// set time, it's in milliseconds
var today = new Date();
today.setTime( today.getTime() );

/*
if the expires variable is set, make the correct 
expires time, the current script below will set 
it for x number of days, to make it for hours, 
delete * 24, for minutes, delete * 60 * 24
*/
if ( expires )
{
expires = expires * 1000 * 60 * 60 * 24;
}
var expires_date = new Date( today.getTime() + (expires) );

document.cookie = name + "=" +escape( value ) +
( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) + 
( ( path ) ? ";path=" + path : "" ) + 
( ( domain ) ? ";domain=" + domain : "" ) +
( ( secure ) ? ";secure" : "" );
}

//Delete_Cookie("cao_1",'/','')
//Delete_Cookie("cao_2",'/','')
//Delete_Cookie("cao_3",'/','')


// this function gets the cookie, if it exists
function Get_Cookie( name ) {
	
var start = document.cookie.indexOf( name + "=" );
var len = start + name.length + 1;
if ( ( !start ) &&
( name != document.cookie.substring( 0, name.length ) ) )
{
return null;
}
if ( start == -1 ) return null;
var end = document.cookie.indexOf( ";", len );
if ( end == -1 ) end = document.cookie.length;
return unescape( document.cookie.substring( len, end ) );
}

// this deletes the cookie when called
function Delete_Cookie( name, path, domain ) {
if ( Get_Cookie( name ) ) document.cookie = name + "=" +
( ( path ) ? ";path=" + path : "") +
( ( domain ) ? ";domain=" + domain : "" ) +
";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}

function CloseDynalayer(){
	Set_Cookie("display_dynalayer", "false", "14", "/", "", "" ) 
	if (document.getElementById('dynalayer')){
		document.getElementById('dynalayer').style.display = 'none';									 
	}
}

function displayDynalayer(){
	if (document.getElementById('dynalayer')){	
		if (!Get_Cookie("display_dynalayer") ||!Get_Cookie("display_dynalayer") == 'false' ){
			document.getElementById('dynalayer').style.display = 'block';									 
		}
		else{
			//Set_Cookie("display_dynalayer", "true", "14", "/", "", "" ) 		
			//document.getElementById('dynalayer').style.display = 'block';	
		}
	}
}

//Delete_Cookie("display_dynalayer",'/','')
displayDynalayer()