function checkForm()
{
	
	if(document.email.name.value==""){
		alert("Please Enter Your Name.");
		document.email.name.focus();
		return false;
		}
	else if(document.email.from.value==""){
		alert("Please enter your email address");
		document.email.from.focus();
		return false;
		}
	else if(checkEmail(document.email.from.value)==false){
		alert("Invalid Email Address. Please enter correct email address.");
		document.email.from.focus();
		return false;
		}
	else if(document.email.phone.value==""){
		alert("Please enter your phone number");
		document.email.phone.focus();
		return false;
		}
	else if(isInteger(document.email.phone.value)==false){
		alert("Invalid phone no. Please do not put any +,(),- or any charecter in the phone no field. Input example for Japan 81337795322");
		document.email.phone.focus();
		return false;
		}
	
	else if(document.email.subject.value==""){
		alert("Please enter the subject of your message.");
		document.email.subject.focus();
		return false;
		}
	else if(document.email.msg.value==""){
		alert("Please do not leave the message field Blank.");
		document.email.msg.focus();
		return false;
		}
	return true;
	}
function isInteger(s)
{   var i;
    for (i = 0; i < s.length; i++)
    {   
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    return true;
}
function checkEmail(str)
	{
		var at="@";
		var dot=".";
		var lat=str.indexOf(at);
		var lstr=str.length;
		var ldot=str.indexOf(dot);
		//email id validation
		if (str.indexOf(at)==-1){
		   return false;
		}
		else if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   return false;
		}

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

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

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

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