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 Email")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Please fill correct Email")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr-1){
		    alert("Please fill correct Email")
		    return false
		}	
		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Please fill correct Email")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Please fill correct Email")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Please fill correct Email")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Please fill correct Email")
		    return false
		 }
 		 return true					
}
 

function validate(){
	
	if(document.form1.name.value==""){
	alert("Please enter ' Name ' !");
	  document.form1.name.focus();
	  return false;
	 }
	
    if (echeck(document.form1.email.value)==false){
	  document.form1.email.focus();
	  return false;
	 }
	 if(document.form1.send_mail.value==""){
	alert("Please choose ' Send to ' !");
	  document.form1.name.focus();
	  return false;
	 }
	
}