// JavaScript Document


function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		nitzandoor2_03_over = newImage("images/nitzandoor2_03-over.jpg");
		nitzandoor2_04_nitzandoor2_07_over = newImage("images/nitzandoor2_04-nitzandoor2_.jpg");
		nitzandoor2_05_nitzandoor2_03_over = newImage("images/nitzandoor2_05-nitzandoor2_.jpg");
		nitzandoor2_06_nitzandoor2_07_over = newImage("images/nitzandoor2_06-nitzandoor2_.jpg");
		nitzandoor2_07_over = newImage("images/nitzandoor2_07-over.jpg");
		nitzandoor2_08_nitzandoor2_07_over = newImage("images/nitzandoor2_08-nitzandoor2_.jpg");
		nitzandoor2_09_nitzandoor2_07_over = newImage("images/nitzandoor2_09-nitzandoor2_.jpg");
		preloadFlag = true;
	}
}

function CheckEmail(src) {
	if(src.length==0){
		return false;
	}
	else{
		var emailReg = "^[\\w-_.]+@([\\w-_]+\\.)+[\\w]+$";
			
		var regex = new RegExp(emailReg);
		return regex.test(src);
	}
}

function validate(oForm){
	var err = "";
	if(!oForm.Name.value)
		err += "יש לכתוב שם \n";
	if( !CheckEmail(oForm.Email.value) )
		err += "יש לכתוב כתובת אימייל חוקי \n";
	if(!oForm.Comment.value)
		err += "יש לכתוב הודעה  \n";
		
	if(err == "")
		return true;
	else{
		alert(err);
		return false;
	}
}

	function openWindow(URL, winName, width, height){

		if(height=='' || !height)
		height=screen.height/2
		height_factor = ((screen.height/100)*85)
		if(height>=height_factor)
			height=height_factor;


		if(width=='' || !width)
			width=screen.width/2
		width_factor = ((screen.width/100)*95)
		if(width>=width_factor)
			width=width_factor;

		var top=((screen.height-height)/2)-(screen.height/20)
		var left=(screen.width - width) / 2 ;

			win=window.open(URL, winName, 'toolbar=no,location=no,directories=no,status=0,menubar=no,scrollbars=yes,resizable=0,copyhistory=no,width='+width+',height='+height+',top='+top+',left='+left+'');
			win.focus();
	}
	
	function sign(){
		var ext = "asp";
		var url = "guestbook_sign." + ext;
		openWindow(url, "sign", 600, 280);
	}