function checkmails()
{
  if(document.getElementById('txt_tomail1').value!="")
  {
    if(echeck(document.getElementById('txt_tomail1').value)==false)
    {
      alert("Please Enter Emailid1 Correctly");
      return false;
    }
  }

  if(document.getElementById('txt_tomail2').value!="")
  {
    if(echeck(document.getElementById('txt_tomail2').value)==false)
    {
      alert("Please Enter Emailid2 Correctly");
      return false;
    }
  }

  if(document.getElementById('txt_tomail3').value!="")
  {
    if(echeck(document.getElementById('txt_tomail3').value)==false)
    {
      alert("Please Enter Emailid3 Correctly");
      return false;
    }
  }

  if(document.getElementById('txt_tomail4').value!="")
  {
    if(echeck(document.getElementById('txt_tomail4').value)==false)
    {
      alert("Please Enter Emailid4 Correctly");
      return false;
    }
  }

  if(document.getElementById('txt_tomail5').value!="")
  {
    if(echeck(document.getElementById('txt_tomail5').value)==false)
    {
      alert("Please Enter Emailid5 Correctly");
      return false;
    }
  }

  if(document.getElementById('txt_ourmail').value=="")
  {
    alert("Please Enter Your Email");
    return false;
  }

  if((document.getElementById('txt_tomail1').value=="") && (document.getElementById('txt_tomail2').value=="") && (document.getElementById('txt_tomail3').value=="") && (document.getElementById('txt_tomail4').value=="") && (document.getElementById('txt_tomail5').value==""))
  {
    alert("Please Enter Any Email");
    return false;
  }

  var cnt=0;
  for(var i=1;i<=5;i++)
  {
    for(j=1;j<=5;j++)
    {
      if(i!=j)
      {
        if(document.getElementById('txt_tomail'+i).value!='')
    		{
          if(document.getElementById('txt_tomail'+i).value==document.getElementById('txt_tomail'+j).value)
          {
            cnt++;
          }
    		}
      }
    }
  }

  if(cnt>0)
  {
    alert('Entered Emails Should not be same');
    return false;
  }
}

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 MM_swapImgRestore() 
{ 
  //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() 
{ 
  //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
  var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
  if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) 
{ 
  //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
  
  d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}

  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];

  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);

  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() 
{ 
  //v3.0

  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)

  if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}