function getCheckedValue(radioObj) 
    {
    var _radioObj=document.getElementsByName(radioObj);
    if(!_radioObj)return ;
    var radioLength = _radioObj.length;
    if(radioLength == undefined)return ;
    for(var i = 0; i < radioLength; i++) 
    {
        if(_radioObj[i].checked)
        {
			document.getElementById('ctl00_MainContent_txtSize').value = _radioObj[i].value;   
			document.getElementById('ctl00_MainContent_txtSize2').value = _radioObj[i].value;   
			document.getElementById('ctl00_MainContent_txtSize3').value = _radioObj[i].id;   
        }
    }
    }