Search option is not supporting for the PDF file in sencha

[Amarjeetbiet]

hi,
i want to open a overlay with pdf file on the button click.
i'm able to do it but seach option is not working seems.
please help me on this issue.
my code is:
for overlay:

Ext.define('InfoImage.common.view.actionItems.HelpOverlay', {
    extend:'Ext.form.Panel',
    require:[
        'Ext.TitleBar',
        'Ext.Button'
    ],
    xtype:'helpOverlay',
    id:'helpOverlay',
    config:{
        xtype:'panel',
        layout:'fit',
        left:100,
        top:50,
        modal:true,
        hideOnMaskTap:true,
        scrollable:true,
        showAnimation:{
            type:'slide',
            direction:'down',
            duration:250,
            easing:'ease-out'
        },
        hideAnimation:{
            type:'slide',
            direction:'up',
            duration:250,
            easing:'ease-out',
            out:true
        },
        width:900,
        height:750,
        centered:true,
        style:'background-color:rgba(0,140,153,0.2)',


        items:[
            {
                xtype:'toolbar',
                ui:'dark',
                docked:'top',
                title:'Help',
                defaults:{
                    ui:'normal',
                    iconMask:true
                },
                items:[
                    {xtype:'spacer'},
                    //Button to close the help overlay
                    {
                        xtype:'button',
                        iconCls:'delete2',
                        handler:function () {
                            Ext.getCmp('helpOverlay').hide();
                        }
                    }
                ]
            },
            //html to open the pdf file in the overlay
            {
                html:'<div id="scroller" style="height:99%; width: 99%;' +
                    ' overflow: auto;">' +
                    '<iframe width="99%" height="99%" ' +
                    'src="resources/pdfFiles/InfoImage_Mobility_Help.pdf">' +
                    '</iframe></div>'
            }


        ]
    }
});

on button click code:

 onHelpTap:function () {
    	if (!this.helpOverlay) {
            this.helpOverlay = Ext.Viewport.add({
                xtype:'helpOverlay'
            });
        }
        this.helpOverlay.show();
    },

please help me on this issue....

[Phil.Strong]

please use the the code block for your code so it's readable. Also you going to need a better description of what your trying to do.

[Amarjeetbiet]

I,m developing application for iPad using sencha touch-2 .I want to open pdf file in a overlay on the button click. i'm able to do that using above code but pdf file loading is taking time. How can i improve the file loading. I also want search text option as in pdf file supported. how can i do this.
Please give me suggestion.