function validateEmail(str)
{
     var regex = /^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
     return regex.test(str);
}

function validateUSPhone(str){
	if(str.length == 13){
		if(str.charAt(0) == "(" && str.charAt(4) == ")" && str.charAt(8) == "-"){
		
			aryNumbers = new Array(1,2,3,5,6,7,9,10,11,12);
			for(i=0; i < aryNumbers.length; i++){
				if(isNaN(str.charAt(aryNumbers[i])) == true){
					return false;	   
				}			
			}						
			return true;
		} else {
			return false;
		}
	} else {
	   return false;
	}
}