// JavaScript Document
function isEmail(entry){
	
	var rex= /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,5})(\]?)$/;
	return rex.test(entry);
}

// This function is used to submit this form
function PostData(obj){
		if(obj.value!=""){
			if(isEmail(obj.value)){
				document.frm_signup.submit();	
			}			
			else
			{
				  alert('Please enter valid email-id');
			}
		}else{
			  
			   obj.value='For updates on topten communities';
		}
	}