function validateText(field,chkFor)
{
    var text="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ "
    var chk=1;
    var temp;
	if(chkFor==1)	
	{
		for (var i=0; i<field.length; i++)
		{
			temp = "" + field.substring(i, i+1);

			if (text.indexOf(temp) == "-1" || field == " ") 
				chk=0;	
		}
	}
	else
	{
		text="1234567890 "
		for (var i=0; i<field.length; i++)
		{
			temp = "" + field.substring(i, i+1);

			if (text.indexOf(temp) == "-1" || field == " ") 
				chk=0;	
		}
	}
	if (chk==0) 
	{
		return false;
	}
	else
		return true;
}