How can i have a pop-up html page from unityscene like this ??

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I want to do the same thing from unity scene
Please Note- I need to open a pop-up like this from exe and webplayer.

Not sure which language your using but this works for both .exe and webplayer. I wrote it awhile back but should still work. :smile:

#pragma strict

/*
 * Author: Andrew Adams
 * Date: 11/24/2012
 *
 * This script will let you launch a web page in a new window from
 *  a standalone or webplayer application.
 */
 
var URL : String; //URL Address to attempt connection to.
var Title : String; // Title the web window should have.

function Start () {
	if(URL == "" || URL == null){
		URL = "http://google.com/";
	} //Just in case you forget the URL
		
	if(Title == "" || Title == null){
		Title = URL;
	} // In case you forget the Title.


	if(Application.isWebPlayer){
		//We are in a webplayer		
		//Build the external eval call string
		var call : String = "window.open('" + URL + "','" + Title + "')";
		
		//Launch the external web page in a new window.
		Application.ExternalEval(call);
	} else {
		//We're in the editor - standalone exe - or otherwise
		//Launch a new web page
		Application.OpenURL(URL);
	}
	
}

where in here have you managed the size of the page to be opened ??

coz thats my most important step

any help please ?

My main motive is to open the pop-up not the page

You can control the size of the window from withing the opened page using JavaScript.