function submitForm()
{
	frm = document.forms.f1;
	
	if (frm.firstName.value == '')
	{
		alert("Please enter your name");
		frm.firstName.focus();
		return false;
	}
	if (frm.organisation.value == '')
	{
		alert("Please enter your company name");
		frm.organisation.focus();
		return false;
	}
	if (frm.comments.value == '')
	{
		alert("Please enter your comments");
		frm.comments.focus();
		return false;
	}
	
 
	var validEmail = checkEmail(frm.email.value);
	if (!validEmail)
	{
		alert("Please enter a valid email address");
		frm.email.focus();
		return false;
	}
		
		
	var validLogoFileExt = checkExtensionLogo();
	if (!validLogoFileExt) {
		alert('please select a .jpg, .jpeg or gif file');
		return false;
	}
	
	var validDocFileExt = checkExtensionDoc();
	if (!validDocFileExt) {
		alert('please select a .doc or .pdf file');
		return false;
	}
	
	showFormProcessing();
}

function checkExtensionLogo() {
	if (document.getElementById("organisationLogo").value != '') {
		var ext = document.getElementById("organisationLogo").value;
		ext = ext.substring(ext.length-3,ext.length);
	  	ext = ext.toLowerCase();
	  	if(ext != 'jpg' && ext != 'gif' && ext != 'peg') {
	    	//alert('You selected a .'+ext+' file; please select a .jpg, .jpeg or gif file instead!');
	    	return false; 
	  	} else {
	    return true;
	  	}
	} else {
		return true;
	}
}

function checkExtensionDoc() {
	if (document.getElementById("organisationDocument").value != '') {
		var ext = document.getElementById("organisationDocument").value;
		ext = ext.substring(ext.length-3,ext.length);
	  	ext = ext.toLowerCase();
	  	if(ext != 'doc' && ext != 'pdf') {
	    	//alert('You selected a .'+ext+' file; please select a .doc or .pdf file instead!');
	    	return false; 
	  	} else {
	    return true;
	  	}
	} else {
		return true
	}
}