function subscribeme() {
	var subemail=document.getElementById("nsltr_input").value;
	  at = subemail.indexOf('@');
         dot = subemail.indexOf('.');
         
         if(at == -1 || dot == -1 || dot <= at + 1 || dot == 0 || dot == subemail.length - 1)
            { alert('Please provide correct email address!'); return(false); }
	else  location.href='index.php?sub_email=' + subemail;
}

 function showpicture(url,width, height)
{
        LeftPosition=(screen.width)?(screen.width-width)/2:100;
     TopPosition=(screen.height)?(screen.height-height)/2:100;
        var Win = window.open(url,'showpic','width=' + width + ',height=' + height + ',top='+TopPosition+',left=' +LeftPosition +',resizable=0,scrollbars=no,menubar=no,toolbar=no,status=no')
}

function check_contact_form() {

	if (document.contact_form.cfirstname.value=="" || 
		document.contact_form.cemail.value=="" ||	
		document.contact_form.csurname.value=="") {
		alert ('All fields marked with * are required!');
		return false;
	}
	else {
		return true; 
	}
}