function showRandImage(rootfolder) {
	var ran_unrounded=Math.random()*24;
	var ran_number=Math.floor(ran_unrounded)+1;
	var line = '<td width="175"><img border="0" src="' + rootfolder + '../images/img/bg' + ran_number + '.gif" width="175" height="110"></td>';
	document.write(line);
}

function insertAtCursor(element, myValue) {
	var myField = document.getElementById(element);

	//IE support
	if (document.selection) {
		myField.focus();
		sel = document.selection.createRange();
		sel.text = myValue;
	}
	else {
		myField.value += myValue;
	}
}

function trim(str) {
	return str.replace(/^\s*|\s*$/g,"");
}

function check(e) {
	e.value = trim(e.value);
	
	if(e.value.length != 0) {
		return true;
	}
	else {
		document.getElementById('label').innerHTML = 'alanlar boş bırakılmamalıdır.';
		return false;
	}
}