How can I register a javascript code a page?

I want to put th javascript function to the aspx.page; I thing it might be like that;

   string strJS= "<script language = javascript>

        (function(images, elements) {
            var fetchImages = function() {
                if(images.length > 0) {
                    var numImages = 10;
                    while(images.length > 0 && numImages-- > 0) {
                        // assuming your elements are <img>
                        document.getElementById(elements.shift()).src = images.shift();
                        // if not you could also set the background (or backgroundImage) css property
                        // document.getElementById(elements.shift()).style.background = "url(" + images.shift() + ")";
                    }
                    setTimeout(fetchImages, 5000);
                }
            }

            // bind to window onload
            window.onload = fetchImages;
            // if you're going to use something like jquery then do something like this instead
            //$(fetchImages);
        }(['url1', 'url2', 'url3'], ['img1', 'img2', 'img3'])) </script>";

Page.ClientScript.RegisterClientScriptBlock(typeof(ui_SUBMVGInfo), "SmartPenCheck", strJS);

The second Questin is;

  ...
... 
    g(ctrlIDBirthPlaceCode).onchange();

     }}
     </script>
     <script language = javascript>
     var url1 = 'http://localhost:3645/ImageHandler.ashx?FormId=XXX.11&FieldId=s1_Adiniz';
     var url2 ='http://localhost:3645/ImageHandler.ashx?FormId=XXX.11&FieldId=s1_Soyadiniz';
     var url3 = 'http://localhost:3645/ImageHandler.ashx?FormId=XXX.11&FieldId=s1_tarih';
     var url4 = 'http://localhost:3645/ImageHandler.ashx?FormId=XXX.11&FieldId=s1_Adiniz';
     var url5 ='http://localhost:3645/ImageHandler.ashx?FormId=XXX.11&FieldId=s1_Soyadiniz';
     var url6 = 'http://localhost:3645/ImageHandler.ashx?FormId=XXX.11&FieldId=s1_tarih';
     var url7 = 'http://localhost:3645/ImageHandler.ashx?FormId=XXX.11&FieldId=s1_Adiniz';
     var url8 ='http://localhost:3645/ImageHandler.ashx?FormId=XXX.11&FieldId=s1_Soyadiniz';
     var url9 = 'http://localhost:3645/ImageHandler.ashx?FormId=XXX.11&FieldId=s1_tarih';
     var url10 = 'http://localhost:3645/ImageHandler.ashx?FormId=XXX.11&FieldId=s1_Adiniz';
     var url11 ='http://localhost:3645/ImageHandler.ashx?FormId=XXX.11&FieldId=s1_Soyadiniz';
     var url12 = 'http://localhost:3645/ImageHandler.ashx?FormId=XXX.11&FieldId=s1_tarih';
    function(images, elements) {var fetchImages = function() 
    {if(images.length > 0) {var numImages = 5;
    while(images.length > 0 && numImages-- > 0) { document.getElementById(elements.shift()).src = images.shift();
     }setTimeout(fetchImages, 5000);
    }}window.onload = fetchImages;
    }(['+url1+', '+url2+', '+url3+','+url4+', '+url5+', '+url6+','+url7+', '+url8+', '+url9+','+url10+', '+url11+', '+url12+'], ['ui_taskFormControl$ctl03$ctl00$ctl03$ui_CustomerNameImage', 'ui_taskFormControl$ctl03$ctl00$ctl03$ui_CustomerSurNameImage', 'ui_taskFormControl$ctl03$ctl00$ctl03$ui_MaritalStatusImage','ui_taskFormControl$ctl03$ctl00$ctl03$ui_SexImage','ui_taskFormControl$ctl03$ctl00$ctl03$ui_BirthDateImage','ui_taskFormControl$ctl03$ctl00$ctl03$ui_BirthPlaceCodeImage','ui_taskFormControl$ctl03$ctl00$ctl03$ui_BirthPlaceImage','ui_taskFormControl$ctl03$ctl00$ctl03$ui_IdNationalityImage','ui_taskFormControl$ctl03$ctl00$ctl03$ui_MotherOldSurNameImage','ui_taskFormControl$ctl03$ctl00$ctl03$ui_TaxNoImage','ui_taskFormControl$ctl03$ctl00$ctl03$ui_CitizenshipNoImage','ui_taskFormControl$ctl03$ctl00$ctl03$ui_HomePhoneImage']));
     </script>

     <script>
    var ui_BirthPlaceCode_a='Intertech.Utility';
    var ui_BirthPlaceCode_c='Intertech.Utility.Common';
    var ui_BirthPlaceCode_sbn='';
...
..

What do you think is it allright or how can I do that? And according to second question above; the use of the code is correct? ref:**

PS: To see my purpose please continue reading below;

There is a web site page which is coded on asp.net with using c# and ajax is enabled too.

I want a very fast loading web page; which is going to happen with the following architecture;

1- First all data is shown by the text boxes (There are 50 text boxes, it is an application form.)

2- When the web Page is requested and loaded, then I want all the photos are shown near the each text boxes 10 by 10 from top of the page till the end of it. (Each photo is between 5 kb - 20 kb; )

I know ImageHandler's the question is how can I put all these idea into real life? some examples and ideas will be great ! thanks This issue has been answered and you may have a look -> here

Regards Bk