function echeck(value) {

		var at="@"
		var dot="."
		var lat=value.indexOf(at)
		var lstr=value.length
		var ldot=value.indexOf(dot)
		if (value.indexOf(at)==-1){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (value.indexOf(at)==-1 || value.indexOf(at)==0 || value.indexOf(at)==lstr){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (value.indexOf(dot)==-1 || value.indexOf(dot)==0 || value.indexOf(dot)==lstr){
		    alert("Invalid E-mail ID")
		    return false
		}

		 if (value.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (value.substring(lat-1,lat)==dot || value.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (value.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID")
		    return false
		 }
		
		 if (value.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

 		 return true					
	}




 
function isAlpha(value)
    {
   if (value.match(/[^a-z A-Z]/)) 
   {
   alert("Only Character Allowed ")
    return false;
	 }
   return true;
    }
	
	function isInteger(s)
{   var i;
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9")))
		{
		alert("Only Numbers Allowed")
		return false;
		}
    }
    // All characters are numbers.
    return true;
}
    
	 
	
	 function stopRKey(evt) {
  var evt = (evt) ? evt : ((event) ? event : null);
  var node = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null);
  if ((evt.keyCode == 13) && (node.type=="text") && (node.type=="textarea"))  {return false;}
}

document.onkeypress = stopRKey;



	function validate_feedform()
{
  var trimmed1 = trim(document.myform.name.value);
  var trimmed2 = trim(document.myform.phone.value);
  var trimmed3 = trim(document.myform.designation.value);
  var trimmed4 = trim(document.myform.organisation.value);
  var trimmed5 = trim(document.myform.comments.value);
  
   
  
  
 if (document.myform.name.value == "" || document.myform.name.value.length < 3)
		{
		alert ('Enter Your Name atleast 3 characters ');
		 document.myform.name.focus(); 
		return false;
		}
		else if (isAlpha(document.myform.name.value)==false)
		{
		document.myform.name.value=""
	    document.myform.name.focus(); 
		return false;
		}
	else if(trimmed1 == ""){
	alert ('Enter Your Name atleast 3 characters ');
	 document.myform.name.focus();
		return false;
}

  
 
	 

else if (document.myform.email.value == "" )
		{
		alert ('Enter  type your  EMail.');
		document.myform.email.focus(); 
		return false;
		}
		else if (echeck(document.myform.email.value)==false)
		{
		document.myform.email.value=""
	    document.myform.email.focus(); 
		return false;
		}
		
   else if (document.myform.phone.value == "" )
		{
		alert ('Please type your phone Number.');
		 document.myform.phone.focus(); 
		return false;
		}
		else if (isInteger(document.myform.phone.value)==false)
		{
		document.myform.phone.value=""
	    document.myform.phone.focus(); 
		return false;
		}
	else if(trimmed2 == ""){
	alert ('Please type your phone Number.');
	document.myform.phone.focus(); 
		return false;
}	
	
		  else if (document.myform.designation.value == "" )
		{
		alert ('Enter Your designation');
		 document.myform.designation.focus(); 
		return false;
		}
		else if (isAlpha(document.myform.designation.value)==false)
		{
		document.myform.designation.value=""
	    document.myform.designation.focus(); 
		return false;
		}
	else if(trimmed3 == ""){
	alert ('Enter Your designation');
	 document.myform.designation.focus();
		return false;
}
	
		  else if (document.myform.organisation.value == "" )
		{
		alert ('Enter Your organisation');
		 document.myform.organisation.focus(); 
		return false;
		}
		else if (isAlpha(document.myform.organisation.value)==false)
		{
		document.myform.organisation.value=""
	    document.myform.organisation.focus(); 
		return false;
		}
	else if(trimmed4 == ""){
	alert ('Enter Your organisation');
	 document.myform.organisation.focus();
		return false;
}
else if ( document.myform.interest.selectedIndex == 0 )
    {
        alert ( "Please Select Interested in'." );
        document.myform.interest.focus(); 
       return false;
	 }	
		
		  else if (document.myform.comments.value == "" || document.myform.comments.value.length < 10)
		{
		alert ('Enter Your Comments atleast 10 characters');
		 document.myform.comments.focus(); 
		return false;
		}
		else if (isAlpha(document.myform.comments.value)==false)
		{
		document.myform.comments.value=""
	    document.myform.comments.focus(); 
		return false;
		}
	else if(trimmed5 == ""){
	alert ('Enter Your Comments');
	 document.myform.comments.focus();
		return false;
}

else
		{
		return true;
		}
	}
 	
function trim(str, chars) {
	return ltrim(rtrim(str, chars), chars);
}
 
function ltrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}
 
function rtrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}