function e_check(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		var ret = 0;
		if (str.indexOf(at)==-1)ret = 1;

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr)ret = 1;

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr)ret = 1;

		if (str.indexOf(at,(lat+1))!=-1) ret = 1;

		if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot)ret = 1;

		if (str.indexOf(dot,(lat+2))==-1)ret = 1;

		if (str.indexOf(" ")!=-1)ret = 1;
		
		if (ret == 1) {
		    return false;
		 }

 		 return true;				
	}


	function check_inputs (comment) {

		var ret = true;
	
		if (document.form.first.value == "") {
			document.getElementById('s1').innerHTML = "* Enter First Name";
			ret = false;
		} else
			document.getElementById('s1').innerHTML = "*";		
		if (document.form.last.value == "") {
			document.getElementById('s2').innerHTML = "* Enter Last Name";
			ret = false;
		} else
			document.getElementById('s2').innerHTML = "*";		
		if (document.form.email.value == "") {
			document.getElementById('s3').innerHTML = "* Enter E-mail Address";
			ret = false;
		} else {		
			if (e_check(document.form.email.value))
				document.getElementById('s3').innerHTML = "*";
			else {
				document.getElementById('s3').innerHTML = "* Not a Valid E-mail!";
				ret = false;
			}
		}
		if (comment == 1) {
			if (document.form.comments.value == "") {
				document.getElementById('s4').innerHTML = "* Enter Comment / Question";
				ret = false;
			} else
				document.getElementById('s4').innerHTML = "*";
			if (document.form.math1.value == "") {
				document.getElementById('s5').innerHTML = "* Show me that you are not a robot!";
				ret = false;
			} else
				document.getElementById('s5').innerHTML = "*";		
		}
				
		return ret;
	}