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function submitCode()
{
document.forms["code"].submit();
var x = document.getElementById("status");
x.innerHTML = "<strong>Checking answer ...</strong>";
x = document.getElementById("check");
x.disabled = true;
x.value = "Checking Answer ...";
document.getElementById("skip").disabled = true;
}
function setSelectionRange(input, selectionStart, selectionEnd)
{
if (input.setSelectionRange)
{
input.focus();
input.setSelectionRange(selectionStart, selectionEnd);
}
else if (input.createTextRange)
{
var range = input.createTextRange();
range.collapse(true);
range.moveEnd('character', selectionEnd);
range.moveStart('character', selectionStart);
range.select();
}
}
function replaceSelection (input, replaceString)
{
if (input.setSelectionRange)
{
var selectionStart = input.selectionStart;
var selectionEnd = input.selectionEnd;
input.value = input.value.substring(0, selectionStart)+ replaceString + input.value.substring(selectionEnd);
if (selectionStart != selectionEnd)
{
setSelectionRange(input, selectionStart, selectionStart + replaceString.length);
}
else
{
setSelectionRange(input, selectionStart + replaceString.length, selectionStart + replaceString.length);
}
}
else if (document.selection)
{
var range = document.selection.createRange();
if (range.parentElement() == input)
{
var isCollapsed = range.text == '';
range.text = replaceString;
if (!isCollapsed)
{
range.moveStart('character', -replaceString.length);
range.select();
}
}
}
}
function autoresize()
{
var ta = document.getElementById('answer');
var divta = document.getElementById('AnswerWithLines');
ta.style.height="";
var height = ta.scrollHeight;
ta.style.height = 'auto';
ta.style.height = height+'px';
divta.style.height = height+'px';
}
function catchTab(item,e)
{
if(navigator.userAgent.match("Gecko"))
{
c=e.which;
}
else
{
c=e.keyCode;
}
if(c==9)
{
replaceSelection(item,String.fromCharCode(9));
setTimeout("document.getElementById('"+item.id+"').focus();",0);
return false;
}
}
var lineObjOffsetTop = 0;
function addLineNumbers(id)
{
var el = document.createElement('DIV');
var ta = document.getElementById(id);
var content = document.getElementById('snippet').value;
ta.parentNode.insertBefore(el,ta);
el.appendChild(ta);
el.style.width = (ta.offsetWidth + 30) + 'px';
ta.style.position = 'absolute';
ta.style.left = '30px';
ta.scrollHeight=""
el.style.border = 'none';
el.style.overflow='hidden';
el.style.position = 'relative';
el.style.width = (ta.offsetWidth + 30) + 'px';
var lineObj = document.createElement('DIV');
lineObj.style.position = 'absolute';
lineObj.style.top = lineObjOffsetTop + 'px';
lineObj.style.width = '27px';
lineObj.style.fontSize= '18px';
lineObj.style.foregroundColor='black';
el.insertBefore(lineObj,ta);
lineObj.style.textAlign = 'right';
lineObj.className='lineObj';
var string = '';
split_content = content.split('\n');
if(id == "answer")
{
el.className='AnswerWithLines';
el.id='AnswerWithLines';
el.style.height = (ta.scrollHeight) + 'px';
for(var no=split_content.length+1;no<1000;no++)
{
if(string.length>0)string = string + '<br>';
string = string + no;
}
}
else
{
el.className='SnippetWithLines';
el.id='SnippetWithLines';
el.style.height = (ta.scrollHeight) + 'px';
for(var no=1;no<=split_content.length;no++)
{
if(string.length>0)string = string + '<br>';
string = string + no;
}
}
ta.onmousedown = function() { positionLineObj(lineObj,ta); };
ta.onscroll = function() { positionLineObj(lineObj,ta); };
ta.onblur = function() { positionLineObj(lineObj,ta); };
ta.onfocus = function() { positionLineObj(lineObj,ta); };
ta.onmouseover = function() { positionLineObj(lineObj,ta); };
ta.onkeyup = function(){autoresize();};
lineObj.innerHTML = string;
}
function positionLineObj(obj,ta)
{
obj.style.top = (ta.scrollTop * -1 + lineObjOffsetTop) + 'px';
}
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