function changeSource(hova,mit)
{
//alert(mit);
document.getElementById(hova).src=mit;
}

function athelyez() {
    document.getElementById('teglalap').style.top=400;
    document.getElementById('teglalap').style.left=500;
    }

function odebbtol(uj_bal,uj_fent) {
    most_fent = pixel2num(document.getElementById('teglalap').style.top);
    most_bal = pixel2num(document.getElementById('teglalap').style.left);

    if (most_fent<uj_fent) {
      teteje = most_fent+1;
    }
    else if (most_fent>uj_fent) {
      teteje = most_fent-1;
    }
    document.getElementById('teglalap').style.top = teteje;

     if (most_bal<uj_bal) {
     bal = most_bal+1;
     }
     else if (most_bal>uj_bal) {
     bal = most_bal-1;
     }
     document.getElementById('teglalap').style.left = bal;

    idozites = setTimeout('odebbtol('+uj_bal+','+uj_fent+')',1);
    ora = 1;
    }