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 OnFormValidate()
	{
		var isFormValid = true;		
																														
		// BEGIN:	VALIDATION																																
		if (document.getElementById("first_name").value.length == 0)
		{
			isFormValid = false;			
			 alert('Please, enter First Name !');			
		} else if (document.getElementById("last_name").value.length == 0 )
		{
			isFormValid = false;			
			alert('Please, enter Last Name !');			
		} else if ( document.getElementById("company").value.length == 0 )
		{
			isFormValid = false;			
			alert('Please, enter Company Name !');			
		} else if (document.getElementById("email").value.length == 0)
		{
			isFormValid = false;					
			alert('Please, enter contact email address !');						
		} else if ( echeck( document.getElementById("email").value ) == false)
		{
			isFormValid = false;			
			document.getElementById("email").focus();
		}
		else if (document.getElementById("country").value.length == 0 )
		{
			isFormValid = false;			
			alert('Please, enter Country !');			
		}																																																 												
		// END:		VALIDATION																																
				
		if (isFormValid == true)
		{			
			document.EmailerForm.submit();			
		}		
	}