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/* - - - - - - - - - - - - - - - - - - - - - - -
 JavaScript
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// global variables
var blink = false;
var blinkID="";
var currImage = 0;
var maximage = 4;
var t;                         // timer
var dermimage = new Array();
for(i=0;i<maximage;i++) dermimage[i] = new Image();
dermimage[0].src = "../images/dalertbase_low.jpg";
dermimage[1].src = "../images/dalertbase_mag.jpg";
dermimage[2].src = "../images/dalertfollowup_mag.jpg";
dermimage[3].src = "../images/dalertresult_mag.jpg";

//functions
function blinkImage(imageID){	
		if(currImage == 1)
			currImage = 2;
		else
			currImage = 1;
		document.images[imageID].src = dermimage[currImage].src;
	
}


function changeResolution(imageID){
		if(currImage == 0 )
			currImage = 1;
		else
			currImage = 0;
		document.images[imageID].src = dermimage[currImage].src;
		
}
	

function toggleblink(imageID){
	blinkID = imageID;
	if(blink == false) {
		blink = true;
		t= setInterval ("blinkImage(blinkID)",500);
	}

	else {
		blink = false;
		clearInterval(t);
	}
}
function showanswer(imageID){
			currImage=3;
			blink = false;
			clearInterval(t);
			document.images[imageID].src = dermimage[currImage].src;
}



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