// JavaScript Document

function validate()
	{
	var err_alert = 0;
	err_string = "";
	
	
	var email = trim(document.newssignup.email.value)
	var t = email
	var at = t.indexOf('@')
	var dot = t.lastIndexOf('.')
	var sp = t.indexOf(' ')
	var ln = t.length - 1
			if((email=='') || (at < 1) || (dot <= at+1) || (dot == ln) || (sp != -1))
			{
			err_string = err_string + '*You must enter a valid E-mail address.\n';
			err_alert = 1;
			}
	if (err_alert == 1)
		{
		alert('Please correct the following errors:\n\n'+err_string);
		}
	if (err_alert == 0)
		{ 
		document.newssignup.submit();
		}
	}	
	
	
	function trim(inputString) {
   // Removes leading and trailing spaces from the passed string. Also removes
   // consecutive spaces and replaces it with one space. If something besides
   // a string is passed in (null, custom object, etc.) then return the input.
   if (typeof inputString != "string") { return inputString; }
   var retValue = inputString;
   var ch = retValue.substring(0, 1);
   while (ch == " ") { // Check for spaces at the beginning of the string
      retValue = retValue.substring(1, retValue.length);
      ch = retValue.substring(0, 1);
   }
   ch = retValue.substring(retValue.length-1, retValue.length);
   while (ch == " ") { // Check for spaces at the end of the string
      retValue = retValue.substring(0, retValue.length-1);
      ch = retValue.substring(retValue.length-1, retValue.length);
   }
   while (retValue.indexOf("  ") != -1) { // Note that there are two spaces in the string - look for multiple spaces within the string
      retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length); // Again, there are two spaces in each of the strings
   }
   return retValue; // Return the trimmed string back to the user
} // Ends the "trim" function