var winWidth = 0, winHeight = 0, divHeight= 0;
function getWinSize() {
	if( typeof( window.innerWidth ) == 'number' ) {
		//Non-IE
		winWidth = window.innerWidth;
		winHeight = window.innerHeight;
	} else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
		//IE 6+ in 'standards compliant mode'
		winWidth = document.documentElement.clientWidth;
		winHeight = document.documentElement.clientHeight;
	} else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
		//IE 4 compatible
		winWidth = document.body.clientWidth;
		winHeight = document.body.clientHeight;
	}
}
var ignoreWinSize = false;
window.onresize = checkWinSize;
function checkWinSize(){
	if (!ignoreWinSize){
		getWinSize();
		if (winWidth < 900 || winHeight < 500){
			document.getElementById("WinSizeAlertBG").style.display='inline';
			document.getElementById("WinSizeAlert").style.display='inline';
		}else{
			document.getElementById("WinSizeAlertBG").style.display='none';
			document.getElementById("WinSizeAlert").style.display='none';
		}
	}
}
function fixWinSize(){
	window.moveTo(0,0);
	window.resizeTo(980, 740);
}
function cancelWinSize(){
	ignoreWinSize = true;
	document.getElementById("WinSizeAlertBG").style.display='none';
	document.getElementById("WinSizeAlert").style.display='none';
}