function check()
{
    if (document.forms[0].name.value=="")
     {
        alert("please enter your name " );
        document.frm.name.focus();
        return false;
     }
 	if (document.forms[0].email.value=="")
     {
      alert("please enter your email Id" );
      document.frm.email.focus();
      return false;
    }
	if (invalidemail(document.frm.email.value))
    {
       alert("email address should be of type 'abc@pqr.some extention' ");
       document.frm.email.focus();
       return false;
    }
	if (document.forms[0].siteurl.value=="")
    {
      alert("please mention the URL of your side" );
      document.frm.siteurl.focus();
      return false;
    }
	if (document.forms[0].desc.value=="")
    {
      alert("Please describe your site" );
      document.frm.desc.focus();
      return false;
    }
	if (document.forms[0].cat.value=="")
    {
      alert("please enter a category" );
      document.frm.cat.focus();
      return false;
    }
	if (document.forms[0].oururl.value=="")
    {
      alert("Input the URL where we can find us" );
      document.frm.oururl.focus();
      return false;
    }

return true;
}

function invalidemail(s)
 {
   	res=0;
   	len=s.length;

    	for(i=0;i<len;i++)
      		{ 
        		if(s.charAt(i)=='@' )
	 
         		 for(j=i;j<len;j++)
            		{
              		if(s.charAt(j)=='.')
                  		res=1;
	
             		}
    		 }  
	if (res==0)
    return true; 
  else
     return false; 
   
}