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 E-mail ID")
		   return false
		}

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

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

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

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

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

 		 return true					
	}



function IsNumeric(sText)

{
   var ValidChars = "0123456789.";
   var IsNumber=true;
   var Char;

 
   for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
   return IsNumber;
   
   }



function validation()
{
if(document.contactform.first_name.value=="")
{

alert("Enter Your First Name!");
document.contactform.first_name.focus();
return false;
}


if(document.contactform.last_name.value=="")
{

alert("Enter Your Last Name!");
document.contactform.last_name.focus();
return false;
}
if(document.contactform.address1.value=="")
{

alert("Enter Your Address!");
document.contactform.address1.focus();
return false;
}
if(document.contactform.city.value=="")
{

alert("Enter Your City!");
document.contactform.city.focus();
return false;
}
if(document.contactform.state.selectedIndex=="")
{

alert("Select Your State Please");

return false;
}
var emailID=document.contactform.email
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email ID")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}




if (document.contactform.phone.value=="")
{

alert("Enter the Phone Number!");

document.contactform.phone.focus();
return false;
}


var phone=document.contactform.phone


if (IsNumeric(phone.value)==false)
{
		alert("Enter only numbers in the Phone Number!");
		phone.value="";
		document.contactform.phone.focus();
		return false
	}

if(document.contactform.info.value=="")
{

alert("Enter Your Question Please!");
document.contactform.info.focus();
return false;
}


return true;

}