String.prototype.trim = function() { return this.replace(/^\s+|\s+$/g, ''); };
function isValid(input) {
  if (null != input) {
    var v = input.value.trim();
    if (null == v || v.length == 0) {
      return false;
    }
  }
  return true;
}
function validateInput(input, msg) {
  if (null != input) {
    var v = input.value.trim();
    if (null == v || v.length == 0) {
      alert(msg);
      input.focus();
      return false;
    }
  }
  return true;
}
function validateField(input) {
  if (null != input) {
    var v = input.value.trim();
    if (null == v || v.length == 0) {
      	input.focus();
      	return false;
    }
    else {
    	input.value=v;
    }
  }
  return true;
}
function blankOrMaxRestriction(elem,max,message){
  	if(isValid(elem)) {
  	    var uInput = elem.value.trim();
		if(uInput.length <= max){
			return true;
		}else{
		    alert(message);
			elem.focus();
			return false;
		}
	}
	else {
		return true;
	}
}//end func
function maxRestriction(elem,max,message){
		
  	    if(null!=elem) {
  	       	    var uInput = elem.value.trim();
				if(uInput.length <= max){
					return true;
				}else{
				    alert(message);
					elem.focus();
					return false;
				}
		}
		return true;
}//end func
function lengthRestriction(elem, min, max,message){
	if(null!=elem){
	var uInput = elem.value.trim();
	if(uInput.length >= min && uInput.length <= max){
		return true;
	}else{
	    alert(message);
		elem.focus();
		return false;
	}
	}
	return true;
}//end func
//////////////////////////////////////////////
function checkLength(elem, length){
	if(null!=elem){
		var uInput = elem.value.trim();
		if(uInput.length != 8){
			elem.focus();
			return false;
		}
		else{
			elem.value=uInput;
			return true;
		}
	}
	return false;
}//end func
//////////////////////////////////////////////
function checkMinMax(elem, min,max){
	if(null!=elem){
		var uInput = elem.value.trim();
		if(uInput <= min||uInput>max){
			elem.focus();
			return false;
		}
		else{
			elem.value=uInput;
			return true;
		}
	}
	return false;
}//end func
//////////////////////////////////////////////
function isNumeric(elem, helperMsg){
	if(elem!=null) {
	var numericExpression = /^[0-9]+$/;
	if(elem.value.match(numericExpression)){
		return true;
	}else{
		alert(helperMsg);
		elem.focus();
		return false;
	}
	}
	return true;
}//end func
function isNumericField(elem){
	if(elem!=null) {
			var numericExpression = /^[0-9]+$/;
			if(elem.value.match(numericExpression)){
				return true;
			}
			else{
				elem.focus();
				return false;
			}
	}
	return true;
}//end func
function isBlankOrNumeric(elem, helperMsg){
	if(!isValid(elem)){
		return true;
	}
	var numericExpression = /^[0-9]+$/;
	if(elem.value.match(numericExpression)){
		return true;
	}else{
		alert(helperMsg);
		elem.focus();
		return false;
	}
}//end func
///////////
function checkemail(input,message){
	
	if(null != input) {
		var str=input.value
		var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
		if (filter.test(str))
			return true;
		else{
			alert(message);
			input.focus();
			return false
		}
		return true;
	}
	else{
		return true;
	}
}//end false
///////////
function validEmailField(input,doFocus){
	if(null != input) {
		var str=input.value
		var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
		if (filter.test(str))
			return true;
		else{
			if(doFocus==true){
				input.focus();
			}
			return false
		}
		return true;
	}
	else{
		return true;
	}
}//end false
function checkbae(){
	if (document.layers||document.getElementById||document.all)
		return checkemail()
	else
		return true
}
function isValidPhoneNumber(input,message) 
{
     if(input!=null) {
     // Check for correct phone number
     rePhoneNumber = new RegExp(/^\([1-9]\d{2}\)\s?\d{3}\-\d{4}$/);
     //"Phone Number Must Be Entered As: (123) 444-1234
     if (!rePhoneNumber.test(input.value.trim())) {
          alert(message);
          input.foucus();
          return false;
     }
 	 return true;
 	 }
 	 return true;
}
function isBlankOrvalidPhoneNumber(input,message) 
{
     if(!isValid(input)){
		return true;
	 }
     // Check for correct phone number
     rePhoneNumber = new RegExp(/^\([1-9]\d{2}\)\s?\d{3}\-\d{4}$/);
     //"Phone Number Must Be Entered As: (123) 444-1234
     if (!rePhoneNumber.test(input.value.trim())) {
          alert(message);
          input.focus();
          return false;
     }
 	 return true;
}

function checkNumberOnly(e) {
  var charCode = (navigator.appName == "Netscape") ? e.which : e.keyCode;
  if (charCode > 31 && (charCode < 48 || charCode > 57)) {
    return false;
  }
  else {
    return true;
  }
}