/**
* dhtmlPopWindow v0.1
*        By: me@daantje.nl
*        Mon Jun 26 14:33:04 CEST 2006
*
*        DESCRIPTION:
*                Wrote this script, cause I needed something to fool the popup killers.
*                This script pops a DHTML div with an iframe with the given page.
*                The popped window appears always in the center of the window/frame.
*                But it's draggable across the window/frame. All the layout can be done
*                with a CSS style sheet. This is what I needed till now, but this script
*                could be somewhat better. Check the todo list...
*
*        DONATE:
*                When you like my script, please do a big or smal PayPal donation to me@daantje.nl
*
*        SUPPORT:
*                Check http://www.daantje.nl
*
*        BUGS AND PATCHES:
*                Please mail me any bugs and/or patches!
*
*        TODO LIST:
*                When you fiel the need to help...
*                - Add scale window funtionality.
*                - Make close button configurable.
*                - Add configurable window placement.
*                - Add configurable window target name.
*                - Add multiple window support.
*
*        LICENSE:
*                This script is GPL. (http://www.gnu.org/copyleft/gpl.txt)
*/

//init globals (DON'T TOUCH!)
_movePopWindowTrigger = false;
_popWindowOffsetX = 0;
_popWindowOffsetY = 0;
_lastPopWindowLeft = 0;
_lastPopWindowTop = 0;


/**
* popWindow(STRING mypage [, INT w] [, INT h] [,BOOL gui]);
*        pop a navigator window with my own specs
*                mypage        : STRING        URL to display
*                w                : INT                window width in pixels
*                h                : INT                window heigth in pixels
*                gui                : BOOL                show window title bar, default true
*/
function popWindow(mypage,w,h,gui){
    //set defaults
    w = w ? w : 200;
    h = h ? h : 300;

        //get or create element...
    if(!document.getElementById('popwindiv')){
        //create div
            popwindiv = document.createElement('DIV');
            popwindiv.id = 'popwindiv';
            popwindiv.style.position = document.all ? 'absolute' : 'fixed'; //fixed position for MSIE is patched!
            popwindiv.style.zIndex = 2;
            popwindiv.style.visibility = 'hidden';
        popwindiv.style.backgroundColor = '#F3F3F3';
        document.getElementsByTagName('body')[0].appendChild(popwindiv);

                //add gui
                if(gui !== false){
                        popwingui = document.createElement('DIV');
                        popwingui.id = 'popwingui';
                        popwingui.style.textAlign = 'right';
                        popwingui.innerHTML = "<a href=\"javascript:void(0);\" onclick=\"javascript:document.getElementById('popwindiv').style.visibility='hidden';\" style=\"text-decoration:none;color:#dddddd;font-size:10px;font-family:arial;\"><img src=\"files/img/btFecha.gif\"></a>";
                        popwindiv.appendChild(popwingui);
                }

            //add iframe
            popwiniframe = document.createElement('IFRAME');
                popwiniframe.id = 'popwiniframe';
                popwiniframe.name = 'popwin';
                popwiniframe.frameBorder = 0;
                if(document.all){
                    popwiniframe.onmouseover = function(){_movePopWindowTrigger=false;};
                }else{
                        popwiniframe.setAttribute('onmouseover','_movePopWindowTrigger=false;');
                }
                popwindiv.appendChild(popwiniframe);
    }else{
            //get elements
            popwindiv = document.getElementById('popwindiv');
            popwingui = document.getElementById('popwingui');
            popwiniframe = document.getElementById('popwiniframe');
    }

        //when mypage is an imgage file, kill margins. (this doesn't seem to work on Mozilla based browsers??)
        ext = mypage.substring(mypage.lastIndexOf('.') + 1);
        if(ext == 'gif' || ext == 'png' || ext == 'jpg' || ext == 'jpeg'){
                popwiniframe.setAttribute('marginWidth','0');
                popwiniframe.setAttribute('marginHeight','0');
        }else{
                popwiniframe.setAttribute('marginWidth','10');
                popwiniframe.setAttribute('marginHeight','10');
        }

    //resize element...
    popwindiv.style.width = w + 'px';
    popwindiv.style.height = (h + parseInt(popwingui.offsetHeight)) + 'px';
    //popwiniframe.style.width = w - 2 + 'px';
    //popwiniframe.style.height = h + 'px';
    popwiniframe.style.width = w + 'px';
    popwiniframe.style.height = h + 'px';


    //position the popup
    if(document.all){
                //patch position for MSIE
                popwindiv.style.top = _lastPopWindowTop = (parseInt((document.body.clientHeight / 2) - (parseInt(popwindiv.style.height) / 2)) + document.body.scrollTop) + 'px';
                popwindiv.style.left = _lastPopWindowLeft = (parseInt((document.body.clientWidth / 2) - (parseInt(popwindiv.style.width) / 2)) + document.body.scrollLeft) + 'px';
            //emulate fixed position.
        window.onscroll = window.onresize = _MSIEpositionPopWindow;
    }else{
                //set position other browsers
                popwindiv.style.top = ((window.innerHeight / 2) - (h / 2)) + 'px';
                popwindiv.style.left = ((window.innerWidth / 2) - (w / 2)) + 'px';
    }

        //get page
        popwiniframe.src = mypage;

        //add drag and drop functionality.
        document.onmousedown = _movePopWindow;
        document.onmouseup = new Function('_movePopWindowTrigger=false;');

        //show popup
        popwindiv.style.visibility = '';
}

/**
* _MSIEpositionPopWindow()
*        nasty patch for fixed position for MSIE
*        (This can be done better, only not without a CSS style. And because I want this script to be fool proof...)
*/
function _MSIEpositionPopWindow(){
        popwindiv = document.getElementById('popwindiv');
        popwindiv.style.top = (parseInt(_lastPopWindowTop) + document.body.scrollTop) + 'px';
        popwindiv.style.left = (parseInt(_lastPopWindowLeft) + document.body.scrollLeft) + 'px';
}

/**
* _movePopWindow()
*        Init the drag of the popup window...
*/
function _movePopWindow(e){
        bar = document.all ? event.srcElement.id : e.target.id;
        if(bar == 'popwingui'){
                //get start mouse position
                _popWindowOffsetX = document.all ? event.clientX : e.clientX;
                _popWindowOffsetY = document.all ? event.clientY : e.clientY;

                //get window position
                popwindiv = document.getElementById('popwindiv');
                tempx = parseInt(popwindiv.style.left);
                tempy = parseInt(popwindiv.style.top);

                //do movement
                _movePopWindowTrigger = true;
                document.onmousemove = _dragPopWindow;
        }
}

/**
* _dragPopWindow()
*        Do movement of window....
*/
function _dragPopWindow(e){
        if(_movePopWindowTrigger == true){
                //push to new position
                popwindiv = document.getElementById('popwindiv');
                if(document.all){
                        popwindiv.style.left = _lastPopWindowLeft = (tempx + (event.clientX - _popWindowOffsetX)) + 'px';
                        popwindiv.style.top = _lastPopWindowTop = (tempy + (event.clientY - _popWindowOffsetY)) + 'px';
                }else{
                        popwindiv.style.left = _lastPopWindowLeft = (tempx + (e.clientX - _popWindowOffsetX)) + 'px';
                        popwindiv.style.top = _lastPopWindowTop = (tempy + (e.clientY - _popWindowOffsetY)) + 'px';
                }
        }
        return false;
}