/*		function backToTop()
			http://web-graphics.com/mtarchive/001659.php
			The cool BackToTop Javascript for smooth scrolling back
			to the top of a page was written by David Lindquist.
--------------------------------------------------------------------- */
function btt_install( ) {
 if( !document.getElementsByTagName ) { return; }
 var a, i = 0;
 while(( a = document.getElementsByTagName( 'a' )[i++] )) {
  if( '#top' == a.getAttribute( 'href' )) {
   a.onclick = function() { backToTop(); return false; }
  }
 }
}

function backToTop() {
    var x1 = x2 = x3 = 0;
    var y1 = y2 = y3 = 0;

    if (document.documentElement) {
        x1 = document.documentElement.scrollLeft || 0;
        y1 = document.documentElement.scrollTop || 0;
    }

    if (document.body) {
        x2 = document.body.scrollLeft || 0;
        y2 = document.body.scrollTop || 0;
    }

    x3 = window.scrollX || 0;
    y3 = window.scrollY || 0;

    var x = Math.max(x1, Math.max(x2, x3));
    var y = Math.max(y1, Math.max(y2, y3));

    window.scrollTo(Math.floor(x / 2), Math.floor(y / 2));

    if (x > 0 || y > 0) {
        window.setTimeout("backToTop()", 25);
    }
    return false;
}



/*		function extTarget( )
			JM & AP
			r5 - 2007/11/10

			changes target on external links
			so that they open in a new window
			now takes into account presence of subdomains
--------------------------------------------------- */
function extTarget_install() {

	var n = '';
	//		get window information
	var w = window.location.hostname;
	var t = w.split( '.' );		
	//		do we have a subdomain
	if(( 'com' == t[t.length -1] ) && ( t.length >= 3 )) { t[0] = ''; }
	w = t.join( '.' );

	var a = document.links;
	for( var i = 0; i < a.length; i++ ) {
		n = a[i].hostname;
		t = n.split( '.' );
		if(( 'com' == t[t.length -1] ) && ( t.length >= 3 )) { t[0] = ''; }
		n = t.join( '.' );
		if(( '' != n ) && ( n != w )) { a[i].target = '_blank'; }
	}
}