// Designed for IE4 -- CheckWindowFrames
function chkwnd(){
// for pages whom are compomet of frameset
	if(window.top.parent.frames.length==0){
		alert("Warning!\n\n\n\nThis page is a compoment of a set of frame,\nSo you should start your tour from the main frame.");
		location.href="IE4.HTM";
	}
}
function chkwnd1(){
// for pages whom are main frame
	if(window.top.parent.frames.length!=0){
		alert("Warning!\n\n\n\nThis page is a mainframe of a set of frame,\nSo you should start your tour inside a new window.");
		window.open("IE4.HTM");
	}
}