function toggleDrawings(num) {

	if (num == 1) {
		document.getElementById('drawnav2').style.display = "none";	
		document.getElementById('drawnav1').style.display = "block";	
	} else {	
		document.getElementById('drawnav1').style.display = "none";	
		document.getElementById('drawnav2').style.display = "block";		
	}
} 
 
 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){
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    return false
		 }

 		 return true					
	}

function ValidateForm(){
	var fname=document.cform.firstname
	var lname=document.cform.lastname	
	var emailID=document.cform.email
	
	if (fname.value=="" || lname.value == ""){
		alert("Please enter your first name, last name and email address.")
		fname.focus()
		return false
	}	
	
	if ((emailID.value==null)||(emailID.value=="")||(echeck(emailID.value)==false)){
		alert("Please enter a valid email address.")
		emailID.focus()
		return false
	}
	return true
 }