function disableOrEnableBtnAtPageLoad(ctrlThatChecks,btn){
    if (document.getElementById(ctrlThatChecks).checked == false){
        document.getElementById(btn).disabled = true;
        document.getElementById('imgWarningTerms').style.display = 'inline';
        cbTerms = true;
        
    }else{
        document.getElementById(btn).disabled = false;  
        document.getElementById('imgWarningTerms').style.display = 'none';      
        cbTerms = false;   
    }
}