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("Invalid Email Address")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid Email Address")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid Email Address")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid Email Address")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid Email Address")
		    return false
		 }

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

 		 return true					
}

function check_number(num_str){
		
	var re = new RegExp(/[a-zA-Z]/);
	if (num_str.value.match(re)) {
    	return false
  	}else{
    	return true
  	}
		
}

function validate_form(){
	//Form Variables
	var email_address=document.web_form.email
	var name=document.web_form.name
	//Phone Variables
	
	
	if((firstname.value==null)||(name.value=="")){
		alert("Please enter your Name")
		name.value=""
		name.focus()
		return false
	}
	if ((email_address.value==null)||(email.value=="")){
		alert("Please Enter an Email Address")
		email_address.focus()
		return false
	}
	if((city.value==null)||(mfor.value=="")){
		alert("Please enter the name of the person this message is for.")
		city.value=""
		city.focus()
		return false
	}
	if((city.value==null)||(message.value=="")){
		alert("Please leave a message.")
		city.value=""
		city.focus()
		return false
	}
	
	
	if (echeck(email_address.value)==false){
		email_address.value=""
		email_address.focus()
		return false
	}
	if (echeck(name.value)==false){
		name.value=""
		name.focus()
		return false
	}
	
	return true
 }