function validate() {
	if (document.frm.ContactEmail.value == "" || document.frm.ContactEmail.value == "Enter your Email here *") {
		alert("Please enter your Email.");
		document.frm.ContactEmail.focus();
		return false;
	}
	//check email format
	var emailStr = document.frm.ContactEmail.value;
	var emailPat=/^(.+)@(.+)$/
	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
	var validChars="\[^\\s" + specialChars + "\]"
	var quotedUser="(\"[^\"]*\")"
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
	var atom=validChars + '+'
	var word="(" + atom + "|" + quotedUser + ")"
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")
	var matchArray=emailStr.match(emailPat)
	if (matchArray==null) {
  		/* Too many/few @'s or something; basically, this address doesn't
     	even fit the general mould of a valid e-mail address. */
		alert("Email address seems incorrect (check @ and .'s)")
		document.frm.ContactEmail.focus();
		return false
	}
	var user=matchArray[1]
	var domain=matchArray[2]
	
	var IPArray=domain.match(ipDomainPat)
	if (IPArray!=null) {
    	// this is an IP address
	    for (var i=1;i<=4;i++) {
	    	if (IPArray[i]>255) {
	        	alert("Destination IP address is invalid!")
				document.frm.ContactEmail.focus();
			return false
	    	}
    	}
    	return true
	}	
	var domainArray=domain.match(domainPat)
	if (domainArray==null) {
		alert("The domain name doesn't seem to be valid.")
		document.frm.ContactEmail.focus();
    	return false
	}	
	var atomPat=new RegExp(atom,"g")
	var domArr=domain.match(atomPat)
	var len=domArr.length
	if (domArr[domArr.length-1].length<2 || 
    	domArr[domArr.length-1].length>3) {
   		// the address must end in a two letter or three letter word.
   		alert("The address must end in a three-letter domain, or two letter country.")
		document.frm.ContactEmail.focus();
   		return false
	}	
	
}