function getWinProp(p){
	if (parseInt(navigator.appVersion)>3) {
		if (navigator.appName.indexOf("Microsoft")!=-1) {
			switch(p){
				case 'w':
					var w = document.documentElement.clientWidth;//document.body.offsetWidth;
					if(!w){
						w=document.body.clientWidth;
					}
					return w;
					break;
			}
		} else if (navigator.appName=="Netscape") {//catch firefox, safari, opera
			switch(p){
				case 'w':
					return window.innerWidth;
					break;
			}
		}
	}
	return 0;
}