// Max count lenght of a textbox
function CheckFieldLength(txtBox, remSpan, mc) {
           
            var tb = document.getElementById(txtBox);
            var rm = document.getElementById(remSpan);
        
            var len = tb.value.length;
            if (len > mc) {
                  tb.value = tb.value.substring(0,mc);
                  len = mc;
            }
            rm.innerHTML = mc - len;
      }
      
// Max count lenght of a textbox, and Preview of textbox
function CheckFieldLengthAndPreview(txtBox, remSpan, mc, prevSpan) {
           
            var tb = document.getElementById(txtBox);
            var rm = document.getElementById(remSpan);
            var pv = document.getElementById(prevSpan);
        
            var len = tb.value.length;
            if (len > mc) {
                  tb.value = tb.value.substring(0,mc);
                  len = mc;
            }
            rm.innerHTML = mc - len;
            
            pv.innerHTML = tb;
      }