function returnObj(objId){
	objElem = document.getElementById(objId);
	return objElem;
}

function loadImg(strImgId){
	var objIcon = returnObj(strImgId);			
	if (objIcon) {objIcon.className = 'show';} 
}

// Functions to check if file exists - return boolean value
function isFile(str){ 
	var O= AJ();
	if(!O) return false;
	try{ 
		O.open("HEAD", str, false);
		O.send(null);
		return (O.status==200) ? true : false;
	}
	catch(er){
		return false; 
	}
}

function AJ(){ 
	var obj; 
	if (window.XMLHttpRequest){
		obj= new XMLHttpRequest();
	}
	else if (window.ActiveXObject) {
		try{
			obj= new ActiveXObject('MSXML2.XMLHTTP.3.0');
		}
		catch(er){
			obj=false;
		}
	}
	return obj; 
}

function checkImgSrc(){
	var thisObj = returnObj("deptSpecImg");
	var thisObjSrc = thisObj.src;
	var newSrc = "";
	
	if (thisObjSrc.indexOf("%20") != -1) {
		newSrc = thisObjSrc.replace(/%20/g,"_");	
		thisObj.src = newSrc;
	}

}