function maincontact_validate()
{
 
  var frm = document.maindatascrapingform;
  
  if(frm.txtemail.value == "" || frm.txtemail.value == "Email:" || frm.txtemail.value == "Email" )
  {
    alert("Please Enter Your Contact EMail Address.");
    frm.txtemail.focus();
    return false;
  } else if(echeck(frm.txtemail.value) == false){
		frm.txtemail.value="";
		frm.txtemail.focus();
		return false;
	}
}
function smallcontact_validate()
{
 
  var frm = document.smalldatascrapingform;
  
  if(frm.txtemail.value == "" || frm.txtemail.value == "Email:" || frm.txtemail.value == "Email" )
  {
    alert("Please Enter Your Contact EMail Address.");
    frm.txtemail.focus();
    return false;
  } else if(echeck(frm.txtemail.value) == false){
		frm.txtemail.value="";
		frm.txtemail.focus();
		return false;
	}
	frm.submit();
}
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					
	}