function chk_email(email){
		var str=email;
		var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z]{2,4})+$/;		
		if (filter.test(str)){
		return true;
	  	}else return false;
}
 
		
		function chk_name(nn){
		var str = nn;
				var filter=/^[a-zA-Z]+$/
				if (filter.test(str)){
				 return true;
	  			}else return false;	
		}
		function chk_infodoroID(nn){
		var str = nn;
				var filter=/^[a-zA-Z0-9_\.\-]{5,30}$/
				if (filter.test(str)){
				 return true;
	  			}else return false;	
		}
		function chk_ans(nn){
		var str = nn;
				var filter=/^[a-zA-Z0-9_\.\-\@\#\$\%\^\&\*\(\)\+\=\?\\\[\]\{\}\,\.\:\;\~\"\'\/]{2,100}$/	
				if (filter.test(str)){
				 return true;
	  			}else return false;	
		}
		function chk_zip(nn){ 
		var str = nn;
				var filter=/^[a-zA-Z0-9]{5,16}$/
				if (filter.test(str)){
				 return true;
	  			}else return false;	
		}
		
		function chk_state(nn){
		var str = nn;
				//var filter=/^[a-zA-Z0-9\-\s]{2,50}$/
				var filter=/^[a-zA-Z\-\s]{2,50}$/
				if (filter.test(str)){
				 return true;
	  			}else return false;	
		}
		
	  	function stripSpaces(name) {
   			var x = name;
    		name = (x.replace(/^\s+/,'')).replace(/\s+$/,'');	
			return name;
		}