function validate_alphabets(which)
{
	indx = ".ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz "   
	str = which.value
	if(str.length > 0)
	{
		for(i=0;i<str.length;i++)
		{
			if(indx.indexOf(str.charAt(i)) < 0)
			{
			    which.value=""
				alert("Enter Alphabets Only ");
				which.focus();
				return false;
			}
		}
	}
}
			


function number(which)
{
	str = which.value
	if(str = "")
	{
		alert("Please Enter Your Criteria in the Textbox!!!");
		which.focus();
		return false;
	}
}

function validate_numbers(which)
{
	indx = "0123456789"   
	str = which.value
	if(str.length > 0)
	{
		for(i=0;i<str.length;i++)
		{
			if(indx.indexOf(str.charAt(i)) < 0)
			{
			    which.value=""
				alert("Enter Numbers Only ");
				which.focus();
				return false;
			}
		}
	}
}