Driving me nuts, form textboxes in 1024×768

Fine, this is cruising me nuts.

 < div id=" myDiv" class=" singleContent" >
< div class=" roundTop" > < img src=".. /images/wrapper/tl. gif" class=" corner" alt=" " /> < /div>
< div class=" innerWrap" >
< h2> 123 Speedy Check< /h2>
< sort id=" myForm" method=" post" action=" " >
< fieldset>
< course id=" sprytextfield1" >
< label> 123 Variety *< /label>
< reviews type=" text" class=" txtBox" name=" 123Number" id=" 123Number" />
< course class=" textfieldRequiredMsg" > < /span> < /span>
< /fieldset>
< fieldset>
< course id=" sprytextfield2" >
< label> Previous Name *< /label>
< reviews type=" text" class=" txtBox" name=" lastName" id=" lastName" />
< course class=" textfieldRequiredMsg" > < /span> < /span>
< /fieldset>
< fieldset>
< reviews name=" submit" type=" submit" class=" btn" value=" Speedy Check" />
< /fieldset>
< /form>
< /div>
< div class=" roundBot" > < img src=".. /images/wrapper/bl. gif" class=" corner" alt=" " /> < /div>
< /div> 

and my personal css

fieldset border: 2px auto 0px; national boundaries: 0;
label
screen: block;
drift: left;
text-align: left;
width: 10em;
colouring: #494949;
text-indent: 2px;

#myForm. txtBoxwidth: 30%;
#myForm labelfont-size: 10px;

. singleContent
background-color: #FFF;
text-align: left;
margin-bottom: 5px;

#myDiv
margin-top: -5px;
drift: left;
width: 46%;
background-image: url(.. /images/logos/logo-123. gif); /*dimensions are 120×49*/
background-repeat: no-repeat;
background-position: 99% middle;

ive designed this generic, intended for confidientality reasons

My problem is We can get the textboxes to take a look good in some sort of 1280×800, when my partner and i switch to 1024×768, theyre way too big…. so when i reduce the PER-CENT width of hte textbox, after that theyre fine, but when i look at 1280×800 theres a great deal of whitespace….

im using jquery/javascript to apply a fix
if(screen. width> 1024)
$(" #myForm inputtype=text" ). css(" width", " 45%" );

but this is certainly extremely messy/bad

You can find 2 files included, the big dark-colored box shows the dimensions of the image
and you may notice the difference in spacing somewhere between the two
why am my partner and i getting such differences from the textboxes

hey do you think you’re still working about this. if so let me know. im realy great with CSS along with HTML.