function checkfield()
{
var form=document.query;
if(form.name.value=='')
 {
 alert("Enter your Name");
  form.name.focus();
  return false;
 
 }
 
 if(form.company_name.value=='')
 {
 alert("Enter your Company name");
  form.company_name.focus();
  return false;
 
 }
 
	if(form.email.value=="")
	{
 	 	  alert("Enter the Email");	
		  form.email.focus();
		  return false;
		 
	}
	if (!echeck(form.email.value))
  	{ 
  	validity = false; alert('Please enter valid Email Id!'); 
	form.email.focus();
   return false;
  	}

 
 if(form.phone.value=='')
 {
 alert("Enter your Phone No.");
  form.phone.focus();
  return false;
 
 }
 
   
 if(form.message.value=='')
 {
 alert("Enter your Message");
  form.message.focus();
  return false;
 
 }
 
 

 

 
 
 
 
//==============validateemail=====================

function echeck(str)
	 {
		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		//trace(lat)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1) 
		{
		   return false
		}

		if (str.indexOf(at)==0 || str.indexOf(at)==lstr)
		{
		   return false
		}

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

		 if (str.indexOf(at,(lat+1))!=-1)
		 {
		    return false
		 }
			
		 if (str.indexOf(" ")!=-1)
		 {
		    return false
		 }
		if(lstr==ldot+1)
	    return false
 		 return true
	}
   //===================================


 



 

 

  return true;
 
 }