function echeck(str) {
		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		var errorMsg = "Sorry, that does not seem to be a valid Email Address. Try again."
		if (str.indexOf(at)==-1){
		   alert(errorMsg)
		   return false
		}
		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert(errorMsg)
		   return false
		}
		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert(errorMsg)
		    return false
		}
		 if (str.indexOf(at,(lat+1))!=-1){
		    alert(errorMsg)
		    return false
		 }
		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert(errorMsg)
		    return false
		 }
		 if (str.indexOf(dot,(lat+2))==-1){
		    alert(errorMsg)
		    return false
		 }
	
		 if (str.indexOf(" ")!=-1){
		    alert(errorMsg)
		    return false
		 }

 		 return true					
	}

function hasClass(ele,cls) {
return ele.className.match(new RegExp('(\\s|^)'+cls+'(\\s|$)'));}

function addClass(ele,cls) {
if (!this.hasClass(ele,cls)) ele.className += " "+cls;}

function removeClass(ele,cls) {
if (hasClass(ele,cls)) {
var reg = new RegExp('(\\s|^)'+cls+'(\\s|$)');
ele.className=ele.className.replace(reg,' ');
}}



function isRightClick(e) {
if (!e)
{
var e = window.event;
}
  if (navigator.appName == 'Netscape'
           && e.which == 3) {
	return true;
      }
   else {
      if (navigator.appName == 'Microsoft Internet Explorer'
          && event.button==2)
         return true;
         }
   return false;
 }