function clearText(field){ 

    if (field.defaultValue == field.value) field.value = '';
    else if (field.value == '') field.value = field.defaultValue;

}
function setCheck(sID){
 if(document.getElementById(sID).value=='1'){
  document.getElementById(sID).value='0';document.getElementById(sID+"s").className='chck chck-0';
 }else{
  document.getElementById(sID).value='1';document.getElementById(sID+"s").className='chck chck-1';
 }
}

function ShowPicture(id,Source) { 
if (Source=="1"){ 
if (document.layers) document.layers[''+id+''].visibility = "show" 
else if (document.all) document.all[''+id+''].style.visibility = "visible" 
else if (document.getElementById) document.getElementById(''+id+'').style.visibility = "visible" 
} 
else 
if (Source=="0"){ 
if (document.layers) document.layers[''+id+''].visibility = "hide" 
else if (document.all) document.all[''+id+''].style.visibility = "hidden" 
else if (document.getElementById) document.getElementById(''+id+'').style.visibility = "hidden" 
} 
}