// JavaScript Document
<!-- 
function ValidEmail(testString) 
{ 
testString = new String(Trim(testString)); 
if(testString.length==0) 
{ 
return false 
} 
var character; 
for(count=0;count<testString.length;count++) 
{ 
character=testString.charAt(count); 
if(character==' ' || character=='/' || character==':' || character==';' || character==',') 
{ 
return false; 
} 
} 
var firstAt=testString.indexOf("@",0); 
if(firstAt<1 || firstAt==testString.length-1) 
{ 
return false 
} 
if(testString.indexOf('@',firstAt+1)!=-1) 
{ 
return false; 
} 
if(testString.indexOf('.',firstAt+1)==-1) 
{ 
return false; 
} 
var lastChar=testString.charAt(testString.length-1); 
var penuChar=testString.charAt(testString.length-2); 
if(lastChar=='.' || penuChar=='.') 
{ 
return false 
} 
return true 
} 
//-->