function popupOpen(){
	var url = "index_f.html";
	var indent = 50;
	var w_name = "keywordsWindow";
	var osName = navigator.userAgent.toUpperCase();
	var aName = navigator.appName.toUpperCase();
	if(osName.indexOf("WIN") >= 0){
		if(aName.indexOf("EXPLORER") >= 0){
			var winName = w_name;
			var w_width = "width=" + screen.availWidth;
			var w_height =",height=" + screen.availHeight;
			var w_left = ",left=" + 0;
			var w_top = ",top=" + 0;
			var w_option = ",location=1,scrollbars=0,menubar=1,status=0,resizable=1";
			var features = w_width + w_height + w_left + w_top + w_option;
			winName = window.open(url,winName,features);
			winName.moveTo(0,0);
			winName.resizeTo(screen.availWidth,screen.availHeight);
			if(window.focus){
				winName.focus();
			}
		}else{
			var winName = w_name;
			var w_width = "width=" + screen.availWidth;
			var w_height =",height=" + screen.availHeight;
			var w_left = ",left=" + 0;
			var w_top = ",top=" + 0;
			var w_option = ",location=1,scrollbars=0,menubar=1,status=0,resizable=1";
			var features = w_width + w_height + w_left + w_top + w_option;
			winName = window.open(url,winName,features);
			winName.moveTo(0,0);
			winName.resizeTo(screen.availWidth,screen.availHeight);
			if(window.focus){
				winName.focus();
			}
		}
	}else if(osName.indexOf("MAC") >= 0){
		if(aName.indexOf("EXPLORER") >= 0){

			var winName = w_name;
			var w_width = "width=" + screen.availWidth;
			var w_height = ",height=" + screen.availHeight - indent;
			var w_left = ",left=" + 0;
			var w_top = ",top=" + 0;
			var w_option = ",location=1,scrollbars=0,menubar=1,status=0,resizable=1";
			var features = w_width + w_height + w_left + w_top + w_option;
			winName = window.open(url,winName,features);
			winName.moveTo(0,0);
			winName.resizeTo(screen.availWidth,screen.availHeight - indent);
			if(window.focus){
				winName.focus();
			}
		}else if(osName.indexOf("SAFARI") >= 0){
				var winName = w_name;
				var w_width = "width=" + screen.availWidth;
				var w_height = ",height=" + screen.availHeight;
				var w_left = ",left=" + 0;
				var w_top = ",top=" + 0;
				var w_option = ",location=1,scrollbars=0,menubar=1,status=0,resizable=1";
				var features = w_width + w_height + w_left + w_top + w_option;
				winName = window.open(url,winName,features);
				winName.moveTo(0,0);
				winName.resizeTo(screen.availWidth,screen.availHeight);
				if(window.focus){
					winName.focus();
				}
		}else{
				var winName = w_name;
				var w_width = "width=" + screen.availWidth;
				var w_height = ",height=" + screen.availHeight;
				var w_left = ",left=" + 0;
				var w_top = ",top=" + 0;
				var w_option = ",location=1,scrollbars=0,menubar=1,status=0,resizable=1";
				var features = w_width + w_height + w_left + w_top + w_option;
				winName = window.open(url,winName,features);
				winName.moveTo(0,0);
				winName.resizeTo(screen.availWidth,screen.availHeight);
				if(window.focus){
					winName.focus();
				}
		}
	}
}