var img_name = new Array('header_info_o.gif','header_service','header_ecat','header_customer','header_support','header_contact');

function altImage(img, img_name) {
	img.src = img_name;
}

function popUp(url,w,h) {
	popWin = window.open(url, '', 'width='+w+',height='+h+',toolbar=no,menubar=no,status=no,scrollbars=yes,resizable=yes');
	//popWin.moveTo(50,100);
}

function goToPage(page_no) {
	document.form1.act.value = '';
	document.form1.page.value = page_no; 
	document.form1.submit();
}

function showhide(element, act) {
	if (act == 'hide') {
		act = 'none';
	} else {
		act = 'block';
	}
	if (document.all) {
		document.all[element].style.display = act;
	} else {
		document.getElementById(element).style.display = act;
	}
}

function parSet(form, par, value) {
	if (navigator.appName == "Microsoft Internet Explorer") {
		if(!eval(form+'.'+par))
			return;
	} else if (navigator.appName == "Netscape") {
		if(eval(form+'.'+par)==undefined)
			return;
	}

	var type = '';
	type = eval(form+'.'+par+'.type');
	
	if (navigator.appName == "Microsoft Internet Explorer") {
		if ( (eval(form+'.'+par+'.length') > 1) && (type != "select-one") && (type != "select-multiple") )
			type = eval(form+'.'+par+'[0].type');
	} else if (navigator.appName == "Netscape") {
		if ( (type == undefined) || ( (eval(form+'.'+par+'.length') > 1) && (type.length==0) ) )
			type = eval(form+'.'+par+'[0].type');
	} else alert("Your browser may have problem to run this page.")
	
	if (type == 'checkbox') {
		if ( (value != null) && (value == eval(form+'.'+par+'.value')) )
		eval(form+'.'+par+'.checked = true;');
	} else if (type == 'radio') {
		loop_count = 0;
		for (i=0; i < eval(form+'.'+par+'.length'); i++) {
			loop_count++;
			if (eval(form+'.'+par+'['+i+'].value == \''+ value + '\''))
				eval(form+'.'+par+'['+i+'].checked = true'); 
		}
		if (loop_count == 0) {
			if (eval(form+'.'+par+'.value == \''+ value + '\''))
				eval(form+'.'+par+'.checked = true'); 
		}
	} else if (type.indexOf('select') != -1) {
		for (i=0; i < eval(form+'.'+par+'.options.length'); i++) {
			//alert(form+'.'+par+'.options['+i+'].value == \'' + value + '\'');
			if (eval(form+'.'+par+'.options['+i+'].value == \'' + value + '\''))
				eval(form+'.'+par+'.options['+i+'].selected = true');
		}
	} else if (type != 'file') {
		eval(form+'.'+par+'.value = \'' + value + '\'');
	}
}

// Check validation in a form
// Input : form
// DefineArray:	vad_type ('fill','date','double','int','length','same'),
//		vad_type, vad_type_name,
//		vad_int, vad_int_name,
//		vad_double, vad_double_name,
//		vad_length, vad_length_name
function validate(fm) {
	var err_msg = '';
	var err_msg2 = '';
	var err_internal = '';
	for (i = 0; i < vad_type.length; i++) {
		err_msg = '';
		if (vad_type[i] == 'fill') {
			if (vad_fill.length != vad_fill_name.length) { err_internal += vad_type[i] + '\n'; continue; }
			for (j = 0; j < vad_fill.length; j++) {
				//alert(vad_fill[j] + '=' + fm[vad_fill[j]].value);
				if (fm[vad_fill[j]].value == '') err_msg += '- ' + vad_fill_name[j] + '\n';
			}
			if (err_msg.length > 0) err_msg2 += 'You must enter following field(s):\n' + err_msg + '\n';
		} 
		else if (vad_type[i] == 'double') {
			if (vad_double.length != vad_double_name.length) { err_internal += vad_type[i] + '\n'; continue; }
			for (j = 0; j < vad_double.length; j++) {
				if (!isDouble(fm[vad_double[j]].value)) err_msg += '- ' + vad_double_name[j] + '\n';
			}
			if (err_msg.length > 0) err_msg2 += 'You must enter number in following field(s):\n' + err_msg + '\n';
		} 
		else if (vad_type[i] == 'int') {
			if (vad_int.length != vad_int_name.length) { err_internal += vad_type[i] + '\n'; continue; }
			for (j = 0; j < vad_int.length; j++) {
				if (!isInt(fm[vad_int[j]].value)) err_msg += '- ' + vad_int_name[j] + '\n';
			}
			if (err_msg.length > 0) err_msg2 += 'You must enter integer in following field(s):\n' + err_msg + '\n';
		} 
		else if (vad_type[i] == 'date') {
			if ((vad_date.length/3) != vad_date_name.length) { err_internal += vad_type[i] + '\n'; continue; }
			for (j = 0; j < vad_date.length; j=j+3) {
				if (!checkDate(fm[vad_date[j]].value,fm[vad_date[j+1]].value,fm[vad_date[j+2]].value)) {
					err_msg += '- ' + vad_date_name[j/3] + '\n';
				}
			}
			if (err_msg.length > 0) err_msg2 += 'The following date(s) is/are invalid:\n' + err_msg + '\n';
		}
		else if (vad_type[i] == 'length') {
			if ((vad_length.length/2) != vad_length_name.length) { err_internal += vad_type[i] + '\n'; continue; }
			for (j = 0; j < vad_length.length; j=j+2) {
				if (fm[vad_length[j]].value.length > eval(vad_length[j+1])) {
					err_msg += '- ' + vad_length_name[j/2] + ' (Max. ' + vad_length[j+1] + ' characters)\n';
				}
			}
			if (err_msg.length > 0) err_msg2 += 'Maximum length exceeds in following field(s):\n' + err_msg + '\n';
		}
		else if (vad_type[i] == 'same') {
			if (vad_same.length != vad_same_name.length) { err_internal += vad_type[i] + '\n'; continue; }
			for (j = 0; j < vad_same.length; j=j+2) {
				if (fm[vad_same[j]].value != fm[vad_same[j+1]].value) {
					err_msg += '- ' + vad_same_name[j] + ' & ' + vad_same_name[j+1] + '\n';
				}
			}
			if (err_msg.length > 0) err_msg2 += 'Following fields must be the same:\n' + err_msg + '\n';
		}
		else if (vad_type[i] == 'compare') {
			if (vad_compare.length/2 != vad_compare_name.length) { err_internal += vad_type[i] + '\n'; continue; }
			for (j = 0; j < vad_compare.length; j=j+2) {
				if (fm[vad_compare[j]].value != '' && isDouble(fm[vad_compare[j]].value)) {
					if (!eval(fm[vad_compare[j]].value + vad_compare[j+1])) {
						err_msg += '- ' + vad_compare_name[j/2] + ' ' + vad_compare[j+1] + '\n';
					}
				}
			}
			if (err_msg.length > 0) err_msg2 += 'Following condition(s) must be maintain:\n' + err_msg + '\n';
		}
		else if (vad_type[i] == 'other') {
			if (!vad_other(fm)) err_msg2 += vad_other_name[0] + '\n';
		}
	}
	if (err_internal.length > 0) {
		alert('Error validate():\n' + err_internal + '(Array length not match)');
		return false;
	}
	if (err_msg2.length > 0) {
		alert(err_msg2);
		return false;
	}
	return true;
}
function isDouble(val) { 
	var standard_num = ".0123456789";
	var count_comma = 0;
	for (var i = 0; i < val.length; i++) { 
		if (standard_num.indexOf(val.substring(i, i + 1)) < 0) return false;
		if (val.substring(i, i + 1) == ".") count_comma++;
		if (count_comma > 1) return false;
	}
	return true;
}
function isInt(val) { 
	var standard_num = "0123456789";
	for (var i = 0; i < val.length; i++) { 
		if (standard_num.indexOf(val.substring(i, i + 1)) < 0) return false;
	}
	return true;
}
function checkDate (yyyy, mm, dd) {
	if (yyyy == '' && mm == '' && dd == '') return true;
	if (yyyy < 2000 || yyyy > 2010 || mm < 1 || mm > 12 || dd < 1 || dd > 31) return false;
	if (mm==1 || mm==3 || mm==5 || mm==7 || mm==8 || mm==10 || mm==12) {
		if (dd > 31) return false;
	} else if (mm==4 || mm==6 || mm==9 || mm==11) {
		if (dd > 30) return false;
	} else if (mm=2 && yyyy%4 == 0) {
		if (dd > 29) return false;
	} else if (mm=2) {
		if (dd > 28) return false;
	} else {
		return false;
	}
	return true;
}
// validate(fm) END

function setCookie(name, value, expires) {
	var exp = new Date();
	exp.setTime(exp.getTime() + (1000*3600*24*expires));
	document.cookie = name + '=' + escape(value) + ';path=/;expires=' + exp.toGMTString();
}
function getCookie(name) {
	var cname = name + '=';
	var dc = document.cookie;
	if (dc.length > 0) {
		begin = dc.indexOf(cname);
		if (begin != -1) {
			begin += cname.length;
			end = dc.indexOf(';', begin);
			if (end == -1) end = dc.length;
			return unescape(dc.substring(begin, end));
		}
	}
	return null;
}

function checkSetCookie(fm) {
	if (fm.email.value == '') {
		alert('Please enter both your email and password.');
	} else {
		if (fm.remember_username.checked) {
			setCookie('myweb2s_login_email',fm.email.value,90);
		} else {
			setCookie('myweb2s_login_email',null,0);
		}
		fm.submit();
	}
}
function forgetPassword(fm) {
	if (fm.email.value == '') {
		alert('Please enter your email first.');
	} else {
		fm.action = 'MemPassword';
		checkSetCookie(fm);
	}
}