/*
 * DHTML email validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */

function echeck(str) {

	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
	   alert("That doesn't appear to be a valid email address. Please check your entry.")
	   return false
	}
	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   alert("That doesn't appear to be a valid email address. Please check your entry.")
	   return false
	}
	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
	   alert("That doesn't appear to be a valid email address. Please check your entry.")
	   return false
	}
	if (str.indexOf(at,(lat+1))!=-1){
	   alert("That doesn't appear to be a valid email address. Please check your entry.")
	   return false
	 }
	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
	   alert("That doesn't appear to be a valid email address. Please check your entry.")
	   return false
	 }
	 if (str.indexOf(dot,(lat+2))==-1){
	   alert("That doesn't appear to be a valid email address. Please check your entry.")
	   return false
	 }
	if (str.indexOf(" ")!=-1){
	   alert("That doesn't appear to be a valid email address. Please check your entry.")
	   return false
	 }
	if (str.indexOf(";")!=-1){
	   alert("That doesn't appear to be a valid email address. Please check your entry.")
	   return false
	 }
	if (str.indexOf(",")!=-1){
	   alert("That doesn't appear to be a valid email address. Please check your entry.")
	   return false
	 }
	if (str.indexOf("'")!=-1){
	   alert("That doesn't appear to be a valid email address. Please check your entry.")
	   return false
	}
	if (str.indexOf("`")!=-1){
	   alert("That doesn't appear to be a valid email address. Please check your entry.")
	   return false
	}
	if (str.indexOf("/")!=-1){
	   alert("That doesn't appear to be a valid email address. Please check your entry.")
	   return false
	}
	if (str.indexOf("\\")!=-1){
	   alert("That doesn't appear to be a valid email address. Please check your entry.")
	   return false
	}
	return true					
}