preloader html

[Xerxe]

ciao a tutti - ho cercato tra i 3d ma senza risultato.. - vorrei sapere come realizzare un preloader html per il caricamento di una pagina come compare in questo sito (tra l'altro molto bello)

http://www.steeldolphin.com/

grazie in anticipo! ciao

[Shores]

Studiati come funziona il JS che usano loro:

// Progressbar - Version 2.6
// Author: Brian Gosselin of http://scriptasylum.com

var imagenames=[ 'images/nav_07.jpg','images/about_side.gif','images/affiliates_01.gif' ,'images/affiliates_02.gif','images/affiliates_03.gif','images/affiliates_04.gif','images/affiliates_05.gif','images/affiliates_06.gif','images/affiliates_07.gif','images/affiliates_08.gif','images/affiliates_09.gif','images/bg.gif','images/bottom_01.gif','images/bottom_02.gif','images/bottom_03.gif','images/contact_side.gif','images/content_bg2.jpg','images/digital_painting_h.gif','images/digitalcolor_h.gif','images/illustration_h.gif','images/latest_work_sample.jpg','images/latest_work_side_01.gif','images/latest_work_side_02.gif','images/latest_work_side_03.gif','images/latest_work_side_04.gif','images/latest_work_side_05.gif','images/latest_work_side-o_04.gif','images/latest_work_side-o_05.gif','images/masthead_left_01.jpg','images/masthead_left_02.jpg','images/masthead_left_03.jpg','images/masthead_left_04.jpg','images/news_tank.gif','images/photography_h.gif','images/portfolio_side_colors.gif','images/portfolio_side_illustration.gif','images/portfolio_side_mixed.gif','images/portfolio_side_painting.gif','images/portfolio_side_photo.gif','images/portfolio_table_bg.gif','images/portfolio_table_side.gif','images/portfolio_table_top.gif','images/portfolio_table_top_corner.gif','images/rebirth_logo.gif','images/shop_side_clothes.gif','images/shop_side_prints.gif','images/side_table_bg.gif','images/tutorials_side_illustrator.gif','images/tutorials_side_photoshop.gif','images/tutorials_side_theory.gif'];
var yposition=430;						//POSITION OF LOAD BAR FROM TOP OF WINDOW, IN PIXELS
var loadedcolor='#687AA0' ;				// PROGRESS BAR COLOR
var unloadedcolor='#4F5D7B';			// BGCOLOR OF UNLOADED AREA
var barheight=17;						// HEIGHT OF PROGRESS BAR IN PIXELS
var barwidth=269;						// WIDTH OF THE BAR IN PIXELS
var bordercolor='#687AA0';				// COLOR OF THE BORDER
var textColor='#FFFFFF';				// COLOR OF TEXT IN LOADING BAR
var textSize='10px';					// SIZE OF TEXT IN LOADING BAR
var textFont='verdana,arial,helvetica,sans-serif';           // FONT FAMILY OF TEXT IN LOADING BAR
var loadonce=false;						// IF THIS VALUE IS true THE BAR WILL NOT DISPLAY IF THE USER
										// RETURNS TO THE PAGE, SET TO false TO HAVE THE BAR REAPPEAR IF
										// THE USER RETURNS TO THE PAGE.

// THE FUNCTION BELOW CONTAINS THE ACTION(S) TAKEN ONCE IMAGES ARE DONE LOADING.
// IF NO ACTION IS DESIRED, TAKE EVERYTHING OUT FROM BETWEEN THE CURLY BRACES ({})
// BUT LEAVE THE FUNCTION NAME AND CURLY BRACES IN PLACE. PRESENTLY, IT IS SET TO
// HIDE THE BAR, BUT CAN BE CHANGED EASILY. TO CAUSE A REDIRECT, INSERT THE FOLLOWING
// LINE IN BETWEEN THE CURLY BRACES:
// document.location.href="http://www.redirect_page.html";
// JUST CHANGE THE ACTUAL PAGE IT "POINTS" TO.

var action=function()
{
document.location.href="http://www.steeldolphin.com/index.php";
}

//*****************************************************//
//********  NO NEED TO EDIT BEYOND THIS POINT  ********//
//*****************************************************//

var NS4 = (document.layers)? true : false;
var IE4 = (document.all)? true : false;
var blocksize=(barwidth-2)/(imagenames.length);
barheight=Math.max(barheight,4);
var loaded=0;
var perouter=null;
var perdone=null;
var images=new Array();
var txt='';
if(NS4){
txt+='<table cellspacing=0 cellpadding=0 border=0><tr><td>';
txt+='<ilayer name="perouter" visibility="hide" height="'+barheight+'" width="'+barwidth+'">';
txt+='<layer width="'+barwidth+'" height="'+barheight+'" bgcolor="'+bordercolor+'" top="0" left="0"></layer>';
txt+='<layer width="'+(barwidth-2)+'" height="'+(barheight-2)+'" bgcolor="'+unloadedcolor+'" top="1" left="1"></layer>';
txt+='<layer name="perdone" width="'+(barwidth-2)+'" height="'+(barheight-2)+'" bgcolor="'+loadedcolor+'" top="1" left="1"></layer>';
txt+='<layer width="'+(barwidth-2)+'" height="'+(barheight-2)+'" top="1" left="1">';
txt+='<table cellpadding=0 cellspacing=0 border=0 width="'+(barwidth-2)+'" height="'+(barheight-2)+'"><tr><td align="center" valign="middle">';
txt+='<span style="color:'+textColor+'; font-size:'+textSize+'; font-family:'+textFont+'">Loading Steel Dolphin Creative...</span>';
txt+='</td></tr></table>';
txt+='</layer>';
txt+='</ilayer>';
txt+='</td></tr></table>';
}else{
txt+='<div id="perouter" style="position:relative; visibility:hidden; background-color:'+bordercolor+'; width:'+barwidth+'px; height:'+barheight+'px;">';
txt+='<div style="position:absolute; top:1px; left:1px; width:'+(barwidth-2)+'px; height:'+(barheight-2)+'px; background-color:'+unloadedcolor+'; font-size:1px;"></div>';
txt+='<div id="perdone" style="position:absolute; top:1px; left:1px; width:0px; height:'+(barheight-2)+'px; background-color:'+loadedcolor+'; font-size:1px;"></div>';
txt+='<div style="position:absolute; top:2px; left:1px; width:'+(barwidth-2)+'px; height:'+(barheight-2)+'px; color:'+textColor+'; font-size:'+textSize+'; font-family:'+textFont+'; text-align:center; cursor:default">Loading Steel Dolphin Creative....</div>';
txt+='</div>';
}
document.write(txt);

//THIS FUNCTION BY MIKE HALL OF BRAINJAR.COM
function findlayer(name,doc){
var i,layer;
for(i=0;i<doc.layers.length;i++){
layer=doc.layers[i];
if(layer.name==name)return layer;
if(layer.document.layers.length>0)
if((layer=findlayer(name,layer.document))!=null)
return layer;
}
return null;
}

function loadimages(){
perouter=(NS4)?findlayer('perouter',document):(IE4)?document.all['perouter']:document.getElementById('perouter');
perdone=(NS4)?perouter.document.layers['perdone']:(IE4)?document.all['perdone']:document.getElementById('perdone');
if(NS4)perouter.captureEvents(Event.MOUSEUP);
perouter.onmouseup=hidebar;
clipEl(perdone,0,0,barheight-2,0);
if(NS4)perouter.visibility="show";
else perouter.style.visibility="visible";
for(n=0;n<imagenames.length;n++){
images[n]=new Image();
images[n].src=imagenames[n];
if(images[n].complete)dispbars();
images[n].onload=dispbars;
images[n].onerror=dispbars;
}}

function dispbars(){
loaded++;
clipEl(perdone, 0, blocksize*loaded, barheight-2, 0);
if(loaded>=imagenames.length)setTimeout('action()', 800);
}

function hidebar(){
if(NS4)perouter.visibility="hide";
else perouter.style.visibility="hidden";
}

function clipEl(el, ct, cr, cb, cl){
if(NS4){
el.clip.left=cl;
el.clip.top=ct;
el.clip.right=cr;
el.clip.bottom=cb;
}else el.style.width=cr+'px';
}

//CREDIS TO DYNAMICDRIVE FOR THE FUNCTION BELOW
function get_cookie(Name) {
var search=Name+"=";
var returnvalue="";
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;
returnvalue=unescape(document.cookie.substring(offset,end));
}}
return returnvalue;
}

window.onload=function(){
var okPB=false;
if (loadonce){
if(get_cookie("progB")==""){
okPB=true;
document.cookie="progB=yes";
}}
else okPB=true;
if(okPB)setTimeout('loadimages()',300);
}

Ciao!

[hako]

nella pagina da te postata v'è questa riga:
<script src="sdc_preload.js"></script>

il contenuto del js (di dinamicdrive quindi riutilizzabile con il copyright delcaso) è visualizzabile qui.

è di facile personalizzazione.

[Xerxe]

Shores e hako no grandissimi: grandiosi!

grazie mille