// JavaScript Document

//alternating images:

imgContainer = [
// ["imageName.extension", "alt text"]
   ["placeholder.jpg", "Rutgers University Arch"],
	["placeholder2.jpg", "Rutgers University Sign"],
	["placeholder3.jpg", "Robeson Campus Center"],
   ["placeholder1.jpg", "Rutgers Aerial View"] //no comma at the end of last index
]

function showImg(){
   index = Math.floor(Math.random() * imgContainer.length);
   document.randomImage.src= "images/" + imgContainer[index][0]; // image
   document.randomImage.alt=imgContainer[index][1]; // alt text
}

////blinking text:
//
//function doBlink() {
//	var blink = document.all.tags("BLINKING");
//	for (var i=0; i<blink.length; i++) 
//	{
//		blink[i].style.visibility = blink[i].style.visibility == "" ? "hidden" : "" ;
//	}
//	setTimeout("doBlink()",1);
//}

function startBlink() {

	  if (document.getElementById("blinking").style.visibility == "hidden") {
		  document.getElementById("blinking").style.visibility = "visible";
		  setTimeout("startBlink()",3500);	
		  
	  } else {
		  document.getElementById("blinking").style.visibility = "hidden";
		  setTimeout("startBlink()",500);
	  }
}


//show the current date:

function Time(){

      var dayArr = new Array ("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", 
                           "Friday", "Saturday");
						   
      var monthArr = new Array("January", "February", "March", "April", "May", "June",
                            "July", "August", "September", "October", "November", 
							"December");
							
      var now = new Date();
   
      var day = now.getDate();
      if (day < 10) {
         day = "0" +day;
      }
   
      var weekday = now.getDay();
      weekday = dayArr[weekday];
   
      var month = now.getMonth();
      month = monthArr[month];
   
      var year = now.getFullYear();
      
		var today = weekday+ ", " +month+ " " +day+ ", " +year;
      document.getElementById("date").innerHTML = today;		
		 										 
}