function on_mouse_effect(obj_name, overname, outname){
	
	var obj = document.getElementById(obj_name);
	
	obj.onmouseover = function(){
		
		var temp_str = obj.src;
		
		temp_str = temp_str.replace(outname, overname);
								
		obj.src = temp_str;
		
	}
	
	obj.onmouseout = function(){
		
		var temp_str = obj.src;
		
		temp_str = temp_str.replace(overname, outname);
								
		obj.src = temp_str;
								
	}
	
}

function chkObject(inParent,theVal) {
	if(inParent){
		if (window.opener.document.getElementById(theVal) != null) {
			return true;
		} 
		else {
			return false;
		}
	}else{
		if (document.getElementById(theVal) != null) {
			return true;
		} 
		else {
			return false;
		}
	}
}