var emailerror=false;
		
function verifmail(){
	var email=document.formname.email.value;
	var tel=document.formname.tel.value;
	var name=document.formname.name.value;
	var address=document.formname.address.value;
	var duration=document.forname.duration.value;
	var basedep=document.forname.basedep.value;	
	var arobase=email.indexOf("@");
	var dot=email.lastIndexOf(".");
	var space=email.indexOf(" ");
	
	if ((arobase != -1)&&(dot != -1)&&(dot > arobase +1)&&(dot < email.length -1)&&(space == -1)&&(tel)&&(name)&&(duration)&&(basedep)&&(address)){
	return true;
	}
	else{
	
		if ((arobase == -1)||(dot == -1)||(dot <= arobase +1)||(dot == email.length -1)||(space != -1)){
			properties="height=90,width=260,left=250,top=250,location=no,scrollbars=no,menubars=no,toolbars=no,resizable=no,status=no";
			window.open("http://www.sailing-adventure.com/errorus.html", "", properties);
			return false;
		}
		if (!tel){
			properties="height=120,width=260,left=250,top=250,location=no,scrollbars=no,menubars=no,toolbars=no,resizable=no,status=no";
			window.open("http://www.sailing-adventure.com/errortelus.html", "", properties);
			return false;
		}
		if (!name){
			properties="height=120,width=260,left=250,top=250,location=no,scrollbars=no,menubars=no,toolbars=no,resizable=no,status=no";
			window.open("http://www.sailing-adventure.com/errornameus.html", "", properties);
			return false;
		}
		
		if (!address){
			properties="height=120,width=260,left=250,top=250,location=no,scrollbars=no,menubars=no,toolbars=no,resizable=no,status=no";
			window.open("http://www.sailing-adventure.com/errornameus.html", "", properties);
			return false;
		}
		
		if (!duration){
			properties="height=120,width=260,left=250,top=250,location=no,scrollbars=no,menubars=no,toolbars=no,resizable=no,status=no";
			window.open("http://www.sailing-adventure.com/errornameus.html", "", properties);
			return false;
		}
		
		if (!basedep){
			properties="height=120,width=260,left=250,top=250,location=no,scrollbars=no,menubars=no,toolbars=no,resizable=no,status=no";
			window.open("http://www.sailing-adventure.com/errornameus.html", "", properties);
			return false;
		}
		
		
	}
}