function changeBG() { 
	var en;
	var pathArray;
	var pgArray;
	var PgName;
	
    pathArray = window.location.pathname.split('/');
	pgArray = pathArray[1].split('.');
	if(pgArray.length <= 1){
		pgName =	"img/"+ "index.jpg";
	}else{
		pgName =	"img/"+ pgArray[0] + ".jpg";
	}
		//alert(pgName);
	en = document.getElementById("homemaincontentarea");
	en.style.backgroundImage = "url("+ pgName +")";


	
    }