function isEmpty(id,msg) {
var error = "";
  if (document.getElementById(id).value == "") {
     error = "Your "+msg+" is required.\n";
  }
return error;	  
}



function checkDrop(id) {
var error = "";
    if (document.getElementById(id).value == "State") {
    	error = "You didn't select a State from the drop-down list.\n";
    }    
return error;
} 





function checkNum(id,msg,num) {
var error="";
	if (document.getElementById(id).value == "") {
	   error = "Your "+msg+" is required.\n";
	} else {
		if (document.getElementById(id).value.length < num) {
	    	error = "Your "+msg+" is too short.\n";
	    }
	}
	
return error;    
}




function checkEmail(id) {
var error="";
var emailFilter=/^.+@.+\..{2,3}$/;
var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/

	if (document.getElementById(id).value == "") {
	   error = "Your Email Address is required.\n";
	} else if (!(emailFilter.test(document.getElementById(id).value))) { 
	   error = "Please enter a valid email address.\n";
	} else if (document.getElementById(id).value.match(illegalChars)) {
	   error = "The email address contains invalid characters.\n";
	}
	
return error;    
}