function changes(){

if((screen.width)==1024){

var otbl = document.getElementById('toptbl');
var omain=document.getElementById('main');
var oic1=document.getElementById('ic1');
var oic2=document.getElementById('ic2');
var oders=document.getElementById('ders');
var omenu=document.getElementById('menu');
var otools=document.getElementById('tools');
var oexercise=document.getElementById('exercise');
var obaslik=document.getElementById('baslik');


otbl.style.height=36; 
omenu.style.fontSize=12;
omain.style.width=1000;
omain.rows[0].cells[0].style.width=762;
omain.rows[0].cells[1].style.width=68;
omain.rows[0].cells[2].style.width=170;



oic1.style.width=762;
oic1.style.height=180;

oic1.rows[0].cells[0].style.width=288;
oic1.rows[0].cells[1].style.width=479;
oic1.rows[0].cells[1].style.height=70;
oic1.rows[1].cells[0].style.width=479;
oic1.rows[1].cells[0].style.height=35;
document.getElementById('ic1').style.backgroundImage = "url(resimler/bg/bg4a.jpg)";
obaslik.style.fontSize=18;
otools.style.fontSize=9;
otools.style.width=354;

oic2.width=762;
oic2.rows[0].cells[0].style.width=80;
oic2.rows[0].cells[1].style.width=208;
oic2.rows[0].cells[2].style.width=479;

oders.style.width=479;
oders.style.fontSize=15;
document.getElementById('ders').style.marginTop="-30";

oexercise.style.fontSize=12;
}

}


function openit(thisfile){
mywin=window.open('thisf','','width=450,height=350,directories=no,scrollbars=yes,location=no,menubar=yes'); 
mywin.location.href=thisfile
}
function voice(thisfile){
mywin=window.open('thisf','','width=400,height=220,directories=no,scrollbars=no,location=no,menubar=no'); 
mywin.location.href=thisfile
}