script.js

ym3812等音源芯片

//	Version: 2.1


// Function:	expdate
// Purpose:	Calculates the Expiration Date for the cookie
function expdate() {
	var today = new Date();
	var expr = new Date( today.getTime() + 8294400000 );
	return expr.toGMTString();
}


// Function:	SetCookie
// Purpose:	Write the cookie, available for the whole site and
//		and availability for one year
function SetCookie( strValue ) {

	// alert( "Current cookie: " + document.cookie );
	document.cookie = "Frames=" + strValue + "; PATH = /; expires=" + expdate();
	// alert( "New cookie: " + document.cookie );
}


// Function:	Init
// Purpose:	Initialise the lot.
function Init() {

	var strNav = "nav_home.html";
	var str = location.search;
	var pos = str.indexOf("?");

	if (pos != -1) {
		strNav = str.substring(pos + 1);
		pos = strNav.indexOf("+");
		if ( pos != -1 ) {
  			strNav = strNav.substring(0, pos) + "?" + strNav.substring(pos + 1);
 		 }
	}
	
	SetCookie("on");
	
	return( strNav )
}


// Function: 	footer
// Purpose:  	Writes bottomline on the mainpages. If frames are not enabled
//		it adds a link to the homepage and a message that the website
//		should be viewed with a frames enabled browser
function footer() {
	var strHRef = location.href
	
	document.write('<hr>');
	if (document.cookie != "Frames=on" ) {
		document.write( '<a href="frm_top.html" target=top CLASS=Logo><img src=images/AQFOOT.jpg></a> | ' );
	}

	document.write( 'Last modified: ' + document.fileModifiedDate,
		' by <a name=webmaster>' );
	if ( strHRef.indexOf("contact") == -1 ){
		document.write('<a href=contact.html>M. v.d. Steenoven</a></a>.' );
	} else {
		document.write('M. v.d. Steenoven</a>.' ); 
	}
	
	if (document.cookie != "Frames=on" ) {
		document.write('<br><small><i>This site is best viewed with a frames enabled browser.</i></small>');
	}
}


// Function:	CheckFrame
// Purpose:	Used in the main-pages to check if the page is viewed in frames.
//		If not, then the cookie is checked if Frames are enabled and
//		the page is relocated.
function CheckFrame( str ) {
	if( top == self ) {
		if ( document.cookie != 'Frames=off' ) {
			if( !str ) {
				// alert( "Relocating" );
				self.location.href = "default.html";
			} else {
				// alert( "Relocating?" + str );
				self.location.href = "default.html?" + str;
			}
		}
	}
}


// Function:	SubFrame
// Purpose:	Used in navigator-pages to open the main-page in parallel
function SubFrame( strMain ) {
	var str = location.search;
	var pos = str.indexOf("?");
	
	if ( !strMain ) strMain = "main.html";		// just an default value

	if (pos != -1) {
  		strMain = str.substring( pos + 1 );
  		// alert( 'SubFrame parameter: ' + strMain );
	}

	if( top == self ) {
		CheckFrame();
	} else {
		window.open( strMain,"main" );
	}
}


// End of file: script.js