function validate()
{

	//alert("Qui dentro");		



	if (book_proposal.name.value == "")
	{
		alert("Please enter your name");
		return false;
	}

	if (!emailvalidation(book_proposal.email, "Please enter a valid email address"))
	{
		return false;
	}



	if (book_proposal.title.value == "")
	{
		alert("Please enter a title");
		return false;			
	}

//ATTENZIONE abstract E' PROBABILMENTE UNA PAROLA RISERVATA PER JAVASCRIPT
//Il campo non si puo' chiamare "abstract"

	if (book_proposal.abstr.value=="")
	{
		alert("Please enter an abstract");
		return false;
	}




	return true;

}




function emailvalidation(entered, alertbox)
{

// E-mail-Validation (c) Henrik Petersen / NetKontoret
// Explained at www.echoecho.com/jsforms.htm
// Please do not remove the this line and the two lines above.
	with (entered)
	{

		apos=value.indexOf("@");
		dotpos=value.lastIndexOf(".");
		lastpos=value.length-1;
		if (apos<1 || dotpos-apos<2 || lastpos-dotpos>3 || lastpos-dotpos<2) 
		{
			if (alertbox) 
			{
				alert(alertbox);
				return false;
			}
		}	
	}
	return true;
}