function hiddenDivWithEffect (ratio){
	 document.getElementById("modifyImageDiv").style.display = "block";
	 if (parseInt( document.getElementById("modifyImageDiv").style.width) > 10) {
				 var newRatio = ratio-0.07;
				 document.getElementById("modifyImageDiv").style.width = 380 * ratio + "px"; 
				 document.getElementById("modifyImageDiv").style.height = 210 * ratio + "px";
				 this.change = window.setTimeout('hiddenDivWithEffect('+newRatio+');',10);//vitesse de l'effet
				 document.getElementById("modifyImageDiv").innerHTML = '';
	 } else {
				 document.getElementById("modifyImageDiv").style.display = 'none';
				 window.clearTimeout (this.change);
	 }
}

// ratio ~ 0.05
function displayDivWithEffect (ratio){
     document.getElementById("modifyImageDiv").style.display="block";
     if (parseInt(document.getElementById("modifyImageDiv").style.width) < 380) {
       var newRatio = ratio + 0.07;
       //DIV growth management
       document.getElementById("modifyImageDiv").style.width = 380 * ratio + "px";
       document.getElementById ("modifyImageDiv").style.height = 210 * ratio + "px";
       this.change =window.setTimeout('displayDivWithEffect('+newRatio+');',10);
			 //vitesse de l'effet
     } else {
           window.clearTimeout(this.change);
     }
}


function showDiv() {
	//display the div
	document.getElementById("modifyImageDiv").style.width = "60px"; 
	document.getElementById("modifyImageDiv").innerHTML = aeroportTxt;

	displayDivWithEffect(0.05);
  	//e = (document.layers) ? event : e;
	
	document.getElementById("modifyImageDiv").style.left=150;
	document.getElementById("modifyImageDiv").style.top=200;
}