function fieldBlankCheck()
{
	if(document.getElementById('txtFName').value == '')
	{
		alert('Please Enter First Name!');
		document.getElementById('txtFName').focus();
		return false;
	}
	if(document.getElementById('txtLName').value == '')
	{
		alert('Please Enter Last Name!');
		document.getElementById('txtLName').focus();
		return false;
	}
	if(document.getElementById('txtAddress').value == '')
	{
		alert('Please Enter Address!');
		document.getElementById('txtAddress').focus();
		return false;
	}
	if(document.getElementById('txtCity').value == '')
	{
		alert('Please Enter City!');
		document.getElementById('txtCity').focus();
		return false;
	}
	if(document.getElementById('txtZip').value == '')
	{
		alert('Please Enter Zip!');
		document.getElementById('txtZip').focus();
		return false;
	}
	if((document.getElementById('txtZip').value)!='')
	{
		if(!ValidateLength('txtZip', 5))
		{
			alert('Please enter correct Zip.');
			return false;
		}
	}
	if(document.getElementById('txtEmail').value == '')
	{
		alert('Please Enter Email!');
		document.getElementById('txtEmail').focus();
		return false;
	}
	var emailFilter=/^.+@.+\..{2,6}$/;
	if (!(emailFilter.test(document.getElementById('txtEmail').value)))
	{
		alert(document.getElementById('txtEmail').value + ' is not a valid Email ID.');
		document.getElementById('txtEmail').value='';
		document.getElementById('txtEmail').focus();
		return false;
	}
	
	var phone1 = document.getElementById('txtPhone1').value;
	var phone2 = document.getElementById('txtPhone2').value;
	var phone3 = document.getElementById('txtPhone3').value;	
	if((phone1 != '') || (phone2 != '') || (phone3 != ''))
	{
		if(!ValidateLength('txtPhone1', 3))
		{
			alert('Please enter correct Phone No.');
			document.getElementById('txtPhone1').focus();
			return false;
		}
		if(!ValidateLength('txtPhone2', 3))
		{
			alert('Please enter correct Phone No.');
			document.getElementById('txtPhone2').focus();
			return false;
		}
		if(!ValidateLength('txtPhone3', 4))
		{
			alert('Please enter correct Phone No.');
			document.getElementById('txtPhone3').focus();
			return false;
		}
	}
	
	var alt=false;
	var len=document.registration.rdoLevel.length;
	for(i=0;i<len;i++){
		if(document.registration.rdoLevel[i].checked)
		{
			alt=true;
		}
	}
	if(!alt)
	{
		alert("Please select membership level");
		return false;
	}
	return true;
}

function validOnkey()
{	
	if((event.keyCode <=47)||(event.keyCode >=58))
	{
		event.keyCode=0;
		alert('you can only enter numeric values for this field');
	}
	
}

function ChangeFocus(pvCurrentObj, pvNextObj, pvCar)
{
	if(parseInt(pvCurrentObj.value.length) >= parseInt(pvCar))
	{
		pvNextObj.focus();
	}		
}

function ValidateLength(currentObj,charLength)
{
	var currentValue = document.getElementById(currentObj).value;
	if(currentValue.length >= parseInt(charLength))
	{
		return true;
	}
//	alert('Please enter '+charLength+' digit '+AlertControlName);
	
	//alert(alertMsg);
	document.getElementById(currentObj).focus();
	return false;
}