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This is a simple example I found that I use,it uses the availWidth and availHeight<br />
<br />
w=800<br />
h=600<br />
if (window.screen) {<br />
w = window.screen.availWidth;<br />
h = window.screen.availHeight;<wbr /><br />
}<br />
window.open('myPage.html',<wbr />'newwindow<wbr />','width='<wbr />+w+',heigh<wbr />t='+h+',to<wbr />p=0,left=0<wbr />'); <br />
<br />
HTH<br />

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This is a simple example I found that I use,it uses the availWidth and availHeight

w=800
h=600
if (window.screen) {
w = window.screen.availWidth;
h = window.screen.availHeight;
}
window.open('myPage.html','newwindow','width='+w+',height='+h+',top=0,left=0');

HTH


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Thank you, GwynforWeb. Perfect!
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<div class="content wysiwyg-content">
Hello Experts. I have thumbnails on a web page that, when clicked, opens a popup window displaying a jpg. I want the popup browser to open maximized, since all the images are different sizes. I'm using the code below, but it's not working. Please advise. Many kind thanks in advance!<br />
<br />
&lt;SCRIPT LANGUAGE=&quot;JavaScript&quot;&gt;<br />
function winPopUp(URL) {<br />
day = new Date();<br />
id = day.getTime();<br />
eval(&quot;page&quot; + id + &quot;&nbsp;= window.open(URL, '&quot; + id + &quot;', 'addressbar=0,toolbar=0,sc<wbr />rollbars=1<wbr />,location=<wbr />0,statusba<wbr />r=0,menuba<wbr />r=0,resiza<wbr />ble=1,scre<wbr />enX=0,scre<wbr />enY=0,top=<wbr />0,left=0,m<wbr />aximize=1'<wbr />);&quot;);<br />
}<br />
&lt;/script&gt;<br />
<br />
&lt;a href=&quot;javascript:winPopUp(<wbr />'images/ph<wbr />oto1.jpg')<wbr />&quot;&gt;Link&lt;/a&gt;<wbr />
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Hello Experts. I have thumbnails on a web page that, when clicked, opens a popup window displaying a jpg. I want the popup browser to open maximized, since all the images are different sizes. I'm using the code below, but it's not working. Please advise. Many kind thanks in advance!

<SCRIPT LANGUAGE="JavaScript">
function winPopUp(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'addressbar=0,toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,screenX=0,screenY=0,top=0,left=0,maximize=1');");
}
</script>

<a href="javascript:winPopUp('images/photo1.jpg')">Link</a>

Open PopUp Window Maximized

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.