function checkEnter(event, targetFunction) {
     var key;      
     if(window.event)
          key = window.event.keyCode; //IE
     else
          key = event.which; //firefox      

    if (key == 13) //Enter
    	targetFunction();
}
function isIE() {
	return navigator.appName.indexOf("ternet Exp") > -1;
}