function slide(src,link,text,target,attr) { this.src = src; this.link = link; this.text = text; this.target = target; this.attr = attr; if (document.images) { this.image = new Image();}
this.loaded = false; this.load = function() { if (!document.images) { return;}
if (!this.loaded) { this.image.src = this.src; this.loaded = true;}
}
this.hotlink = function() { var mywindow; if (!this.link) return; if (this.target) { if (this.attr) { mywindow = window.open(this.link, this.target, this.attr);} else { mywindow = window.open(this.link, this.target);}
if (mywindow && mywindow.focus) mywindow.focus();} else { location.href = this.link;}
}
}
function slideshow( slideshowname ) { this.name = slideshowname; this.repeat = true; this.prefetch = -1; this.image; this.textid; this.textarea; this.timeout = 3000; this.slides = new Array(); this.current = 0; this.timeoutid = 0; this.add_slide = function(slide) { var i = this.slides.length; if (this.prefetch == -1) { slide.load();}
this.slides[i] = slide;}
this.play = function(timeout) { this.pause(); if (timeout) { this.timeout = timeout;}
if (typeof this.slides[ this.current ].timeout != 'undefined') { timeout = this.slides[ this.current ].timeout;} else { timeout = this.timeout;}
this.timeoutid = setTimeout( this.name + ".loop()", timeout);}
this.pause = function() { if (this.timeoutid != 0) { clearTimeout(this.timeoutid); this.timeoutid = 0;}
}
this.update = function() { if (! this.valid_image()) { return;}
if (typeof this.pre_update_hook == 'function') { this.pre_update_hook();}
var slide = this.slides[ this.current ]; var dofilter = false; if (this.image &&
typeof this.image.filters != 'undefined' &&
typeof this.image.filters[0] != 'undefined') { dofilter = true;}
slide.load(); if (dofilter) { if (slide.filter &&
this.image.style &&
this.image.style.filter) { this.image.style.filter = slide.filter;}
this.image.filters[0].Apply();}
this.image.src = slide.image.src; if (dofilter) { this.image.filters[0].Play();}
this.display_text(); if (typeof this.post_update_hook == 'function') { this.post_update_hook();}
if (this.prefetch > 0) { var next, prev, count; next = this.current; prev = this.current; count = 0; do { if (++next >= this.slides.length) next = 0; if (--prev < 0) prev = this.slides.length - 1; this.slides[next].load(); this.slides[prev].load();} while (++count < this.prefetch);}
}
this.goto_slide = function(n) { if (n == -1) { n = this.slides.length - 1;}
if (n < this.slides.length && n >= 0) { this.current = n;}
this.update();}
this.goto_random_slide = function(include_current) { var i; if (this.slides.length > 1) { do { i = Math.floor(Math.random()*this.slides.length);} while (i == this.current); this.goto_slide(i);}
}
this.next = function() { if (this.current < this.slides.length - 1) { this.current++;} else if (this.repeat) { this.current = 0;}
this.update();}
this.previous = function() { if (this.current > 0) { this.current--;} else if (this.repeat) { this.current = this.slides.length - 1;}
this.update();}
this.shuffle = function() { var i, i2, slides_copy, slides_randomized; slides_copy = new Array(); for (i = 0; i < this.slides.length; i++) { slides_copy[i] = this.slides[i];}
slides_randomized = new Array(); do { i = Math.floor(Math.random()*slides_copy.length); slides_randomized[ slides_randomized.length ] = slides_copy[i]; for (i2 = i + 1; i2 < slides_copy.length; i2++) { slides_copy[i2 - 1] = slides_copy[i2];}
slides_copy.length--;} while (slides_copy.length); this.slides = slides_randomized;}
this.get_text = function() { return(this.slides[ this.current ].text);}
this.get_all_text = function(before_slide, after_slide) { all_text = ""; for (i=0; i < this.slides.length; i++) { slide = this.slides[i]; if (slide.text) { all_text += before_slide + slide.text + after_slide;}
}
return(all_text);}
this.display_text = function(text) { if (!text) { text = this.slides[ this.current ].text;}
if (this.textarea && typeof this.textarea.value != 'undefined') { this.textarea.value = text;}
if (this.textid) { r = this.getElementById(this.textid); if (!r) { return false;}
if (typeof r.innerHTML == 'undefined') { return false;}
r.innerHTML = text;}
}
this.hotlink = function() { this.slides[ this.current ].hotlink();}
this.save_position = function(cookiename) { if (!cookiename) { cookiename = this.name + '_slideshow';}
document.cookie = cookiename + '=' + this.current;}
this.restore_position = function(cookiename) { if (!cookiename) { cookiename = this.name + '_slideshow';}
var search = cookiename + "="; if (document.cookie.length > 0) { offset = document.cookie.indexOf(search); if (offset != -1) { offset += search.length; end = document.cookie.indexOf(";", offset); if (end == -1) end = document.cookie.length; this.current = parseInt(unescape(document.cookie.substring(offset, end)));}
}
}
this.noscript = function() { $html = "\n"; for (i=0; i < this.slides.length; i++) { slide = this.slides[i]; $html += '<P>'; if (slide.link) { $html += '<a href="' + slide.link + '">';}
$html += '<img src="' + slide.src + '" ALT="slideshow image">'; if (slide.link) { $html += "<\/a>";}
if (slide.text) { $html += "<BR>\n" + slide.text;}
$html += "<\/P>" + "\n\n";}
$html = $html.replace(/\&/g, "&amp;" ); $html = $html.replace(/</g, "&lt;" ); $html = $html.replace(/>/g, "&gt;" ); return('<pre>' + $html + '</pre>');}
this.loop = function() { if (this.current < this.slides.length - 1) { next_slide = this.slides[this.current + 1]; if (next_slide.image.complete == null || next_slide.image.complete) { this.next();}
} else { this.next();}
this.play( );}
this.valid_image = function() { if (!this.image)
{ return false;}
else { return true;}
}
this.getElementById = function(element_id) { if (document.getElementById) { return document.getElementById(element_id);}
else if (document.all) { return document.all[element_id];}
else if (document.layers) { return document.layers[element_id];} else { return undefined;}
}
this.set_image = function(imageobject) { if (!document.images)
return; this.image = imageobject;}
this.set_textarea = function(textareaobject) { this.textarea = textareaobject; this.display_text();}
this.set_textid = function(textidstr) { this.textid = textidstr; this.display_text();}
}