/////////////General//////////////////////////////////////////////////////////
function expandCollapse(id_hidden,id_img,pix_none,pix_block){
	if(document.getElementById(id_hidden).style.display == 'block'){
		document.getElementById(id_hidden).style.display = 'none';
		document.getElementById(id_img).src = pix_none;
	}
	else if(document.getElementById(id_hidden).style.display == 'none')
	{
		document.getElementById(id_hidden).style.display = 'block';
		document.getElementById(id_img).src = pix_block;
	}
}

function hideIt(id_hidden){
	document.getElementById(id_hidden).style.display = 'none';
}

function showIt(id_hidden){
	document.getElementById(id_hidden).style.display = 'block';
}

function chgImg(id_img,pix){
	document.getElementById(id_img).src = pix;
}

function chgBgMover(id,color){
	if (document.getElementById)
	{
		var nodeObj = document.getElementById(id);
		nodeObj.style.backgroundColor = color;
	}
}


////////////////Hard Code/////////////////////////////////////////////////////////
function studyChkCont(id){
	switch (id)
	{
	case "studyHidden_1":
		if(document.getElementById('studyHidden_1').style.display == 'block'){
			document.getElementById('studyDefault').style.display = 'none';
		}
		else if(document.getElementById('studyHidden_1').style.display == 'none')
		{
			document.getElementById('studyDefault').style.display = 'block';
		}
		
		document.getElementById('studyHidden_2').style.display = 'none';
		document.getElementById('studyHidden_4').style.display = 'none';
		chgImg('img_2','../images/stars_black.gif');
		chgImg('img_4','../images/stars_black.gif');
		break;
	case "studyHidden_2":
		if(document.getElementById('studyHidden_2').style.display == 'block'){
			document.getElementById('studyDefault').style.display = 'none';
		}
		else if(document.getElementById('studyHidden_2').style.display == 'none')
		{
			document.getElementById('studyDefault').style.display = 'block';
		}
		document.getElementById('studyHidden_1').style.display = 'none';
		document.getElementById('studyHidden_4').style.display = 'none';
		chgImg('img_1','../images/stars_black.gif');
		chgImg('img_4','../images/stars_black.gif');
		break;
	case "studyHidden_4":
		if(document.getElementById('studyHidden_4').style.display == 'block'){
			document.getElementById('studyDefault').style.display = 'none';
		}
		else if(document.getElementById('studyHidden_4').style.display == 'none')
		{
			document.getElementById('studyDefault').style.display = 'block';
		}
		document.getElementById('studyHidden_1').style.display = 'none';
		document.getElementById('studyHidden_2').style.display = 'none';
		chgImg('img_1','../images/stars_black.gif');
		chgImg('img_2','../images/stars_black.gif');
		break;
	}
}

////////Right Panel - Course Search ///////////////////////////////////
function changeField(parent) {
	//alert(parent);
	//alert(parent.options[parent.selectedIndex].text);
	switch(parent.options[parent.selectedIndex].text)
	{
	case "English course/Work & Study":
		window.location="services.php";
		break;
	case "Certifications & Diplomas":
		document.getElementById("study_area").disabled=true;
		var x = document.course_form.institute;
		var ary = new Array("Edinburgh Telford College");
		//This way works in Firefox but doesn't work in IE6
		//x.innerHTML = "<option>" + ary.join("</option><option>") + "</option>";
		
		//Another way to add options
		while (x.options.length > 0)
			x.removeChild(x.options[0]);
		
		for (var c=0;c<ary.length;++c) {
			var y  = document.createElement('option');
			y.text = ary[c];
			//x.appendChild(y);
			//Use try...catch because of IE6 need x.add(y) only
			try
			{
				x.add(y,null);
			}
			catch (ex)
			{
				x.add(y);
			}
		}
		break;
	case "Undergraduate":
		document.getElementById("study_area").disabled=false;
		var x = document.course_form.institute;
		var ary = new Array("All","Aberdeen, University of","Abertay Dundee, University of","Dundee, University of","Edinburgh Telford College","Edinburgh, University of","Glasgow Caledonian University","Glasgow, University of","Heriot-Watt University","Robert Gordon University","St Andrews, University of","Stirling, University of","Strathclyde, University of");
		while (x.options.length > 0)
			x.removeChild(x.options[0]);
		
		for (var c=0;c<ary.length;++c) {
			var y  = document.createElement('option');
			if(ary[c] == 'All')
				y.value = "";
			y.text = ary[c];
			//x.appendChild(y);
			//Use try...catch because of IE6 need x.add(y) only
			try
			{
				x.add(y,null);
			}
			catch (ex)
			{
				x.add(y);
			}
		}
		break;
	case "Postgraduate":
		document.getElementById("study_area").disabled=false;
		var x = document.course_form.institute;
		var ary = new Array("All","Aberdeen, University of","Abertay Dundee, University of","Dundee, University of","Edinburgh Telford College","Edinburgh, University of","Glasgow Caledonian University","Glasgow, University of","Heriot-Watt University","Robert Gordon University","St Andrews, University of","Stirling, University of","Strathclyde, University of");
		while (x.options.length > 0)
			x.removeChild(x.options[0]);
		
		for (var c=0;c<ary.length;++c) {
			var y  = document.createElement('option');
			if(ary[c] == 'All')
				y.value = "";
			y.text = ary[c];
			//x.appendChild(y);
			//Use try...catch because of IE6 need x.add(y) only
			try
			{
				x.add(y,null);
			}
			catch (ex)
			{
				x.add(y);
			}
		}
		break;
	} //end of swich
 
}

////////Header - Main menu ///////////////////////////////////
function showmenu(elmnt)
{
document.getElementById(elmnt).style.visibility="visible"
}
function hidemenu(elmnt)
{
document.getElementById(elmnt).style.visibility="hidden"
}

/////////Form//////////////////////////////////////////////////
function chk1RqrFld(form,field,msg){
	if(document.getElementById(field).value == "")
	{
		alert(msg);
		return false;
	}
	else
	{
		document.getElementById(form).submit();
	}
	
}

function chk2RqrFld(form,field_1,field_2,msg){
	if(document.getElementById(field_1).value == "" || document.getElementById(field_2).value == "")
	{
		alert(msg);
		return false;
	}
	else
	{
		document.getElementById(form).submit();
	}
	
	
}