function loadLargerImage ( evt ) {
var imagelink = null ;
if ( evt ) {
imagelink = evt.target ;
} else {
evt = window.event ;
imagelink = evt.srcElement ;
}
while ( imagelink.tagName != 'A' ) {
imagelink = imagelink.parentNode ;
}
if ( imagelink.className != 'largerimage' ) return true ;
var windowFeatures = "resizable,top=0,left=0" ;
var image ;
var altText = "" ;
var strWidth = "100%" ;
var styleForm = "" ;
if ( image = imagelink.firstChild ) {
altText = imagelink.firstChild.alt.replace(/ ?Larger image available.?/ , "" ) ;
var width = image.width * 2 ;
var height = image.height * 2 + 45;
var imageWidth = image.width * 2 ;
var imageHeight = image.height * 2 ;
strWidth = width + 'px' ;
windowFeatures += ",height=" + height + ",width=" + width ;
styleForm = 'text-align:center;' ;
} else {
return true ;
}
styleForm += 'margin:0;padding: 0.5em 0 0;width:' + strWidth + ';' ;
var title = altText || "Large Image" ;
wnd = window.open("","imageViewer",windowFeatures) ;
wnd.document.write('\n\n \n') ;
wnd.document.write(' \n') ;
wnd.document.write(' ' + title + '\n \n \n') ;
wnd.document.write(' 
\n') ;
wnd.document.write(' \n') ;
wnd.document.write(' \n') ;
wnd.document.close() ;
if ( window.blur ) {
wnd.blur();
}
if ( window.focus ) {
wnd.focus();
}
return false ;
}
function setupLargerImages ( evt ) {
initialise ( ) ;
if ( document.getElementById ) {
var images = document.getElementById( "content" ).getElementsByTagName( "img" ) ;
for ( var i = 0 ; i < images.length ; i++ ) {
if ( images[i].parentNode.className == "largerimage" ) {
images[i].parentNode.onclick = loadLargerImage ;
}
}
}
}
window.onload = setupLargerImages ;