function IsNumer(str)
	 {
	 	var no=true,i,s1;
		var Chr = "0123456789-";
		for (i = 0; i < str.length ; i++)
      	{
      		s1= str.charAt(i);
      		if (Chr.indexOf(s1) == -1)
         	{
         		no = false;
         	}
      	}
		if(no==false)
		{
			return false;
		}
		else
		{
			return true;
		}
	 }
function validateEmail(email){
	//var emailpat=/^(\".*\"|[A-Za-z]\w*)@(\[\d{1,3}(\.\d{1,3}){3}|[A-Za-z]\w*(\.[A-Za-z]\w*)+)$/;
	var emailpat=/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$/;
	var matchArray=email.match(emailpat);
	if(matchArray==null)
	 {
		//alert("incorrect email address");
		return false;
 	}
	return true;
}