// Zoom Levels
    var cLevel1 = 100;
    var cLevel2 = 250;
    var cLevel3 = 500;
    var cLevel4 = 1000;
    var cLevel5 = 2500;
    var cLevel6 = 5000;
    var cLevel7 = 10000;
    var cLevel8 = 25000;
    var cLevel9 = 50000;
    var cLevel10 = 120000;
    var iCurrentLevel = 1;
    
    var sImagePath = "images/zoomlevel/";
    
    function ChangeZoomLevel(level) {
        
        if ( iCurrentLevel > 0 ) {
			
	        // Switch off the previous image
	        if ( iCurrentLevel == 1 ) { document.getElementById("Zoom1").src = sImagePath + "Zoom-bar_02.gif"; }
	        else if ( iCurrentLevel == 2 ) { document.getElementById("Zoom2").src = sImagePath + "Zoom-bar_04.gif"; }
	        else if ( iCurrentLevel == 3 ) { document.getElementById("Zoom3").src = sImagePath + "Zoom-bar_06.gif"; }
	        else if ( iCurrentLevel == 4 ) { document.getElementById("Zoom4").src = sImagePath + "Zoom-bar_08.gif"; }
	        else if ( iCurrentLevel == 5 ) { document.getElementById("Zoom5").src = sImagePath + "Zoom-bar_10.gif"; }
	        else if ( iCurrentLevel == 6 ) { document.getElementById("Zoom6").src = sImagePath + "Zoom-bar_12.gif"; }
	        else if ( iCurrentLevel == 7 ) { document.getElementById("Zoom7").src = sImagePath + "Zoom-bar_14.gif"; }
	        else if ( iCurrentLevel == 8 ) { document.getElementById("Zoom8").src = sImagePath + "Zoom-bar_16.gif"; }
	        else if ( iCurrentLevel == 9 ) { document.getElementById("Zoom9").src = sImagePath + "Zoom-bar_18.gif"; }
	        else if ( iCurrentLevel == 10 ) { document.getElementById("Zoom10").src = sImagePath + "Zoom-bar_20.gif"; }
				
        }
			
        // Turn on the correct image
        if ( level == 1 ) {
	        Zoom = parseInt(cLevel1);
	        document.getElementById("Zoom1").src = sImagePath + "/Zoom-bar-selected_02.gif";
        }
        else if ( level == 2 ) {
	        Zoom = parseInt(cLevel2);
	        document.getElementById("Zoom2").src = sImagePath + "Zoom-bar-selected_04.gif";
        }
        else if ( level == 3 ) {
	        Zoom = parseInt(cLevel3);
	        document.getElementById("Zoom3").src = sImagePath + "Zoom-bar-selected_06.gif";
        }
        else if ( level == 4 ) {
	        Zoom = parseInt(cLevel4);
	        document.getElementById("Zoom4").src = sImagePath + "Zoom-bar-selected_08.gif";
        }
        else if ( level == 5 ) {
	        Zoom = parseInt(cLevel5);
	        document.getElementById("Zoom5").src = sImagePath + "Zoom-bar-selected_10.gif";
        }
        else if ( level == 6 ) {
	        Zoom = parseInt(cLevel6);
	        document.getElementById("Zoom6").src = sImagePath + "Zoom-bar-selected_12.gif";
        }
        else if ( level == 7 ) {
	        Zoom = parseInt(cLevel7);
	        document.getElementById("Zoom7").src = sImagePath + "Zoom-bar-selected_14.gif";
        }
        else if ( level == 8 ) {
	        Zoom = parseInt(cLevel8);
	        document.getElementById("Zoom8").src = sImagePath + "Zoom-bar-selected_16.gif";
        }
	        else if ( level == 9 ) {
	        Zoom = parseInt(cLevel9);
	        document.getElementById("Zoom9").src = sImagePath + "Zoom-bar-selected_18.gif";
        }
        else if ( level == 10 ) {
	        Zoom = parseInt(cLevel10);
	        document.getElementById("Zoom10").src = sImagePath + "Zoom-bar-selected_20.gif";
        }
		
        iCurrentLevel = level;
        
        bRedrawPointsNewPosition = true;
        
        UpdateMap();

    }
		
    function Decrease() {

        if ( iCurrentLevel < 10 ) {
	        ChangeZoomLevel( iCurrentLevel + 1);
        }
    }

    function Increase() {

        if ( iCurrentLevel > 1 ) {
	        ChangeZoomLevel( iCurrentLevel - 1);
        }
    }
	
    function SelectZoomLevelIndicator() {
			
        document.getElementById("Zoom1").src = sImagePath + "Zoom-bar_02.gif";
        document.getElementById("Zoom2").src = sImagePath + "Zoom-bar_04.gif";
        document.getElementById("Zoom3").src = sImagePath + "Zoom-bar_06.gif";
        document.getElementById("Zoom4").src = sImagePath + "Zoom-bar_08.gif";
        document.getElementById("Zoom5").src = sImagePath + "Zoom-bar_10.gif";
        document.getElementById("Zoom6").src = sImagePath + "Zoom-bar_12.gif";
        document.getElementById("Zoom7").src = sImagePath + "Zoom-bar_14.gif";
        document.getElementById("Zoom8").src = sImagePath + "Zoom-bar_16.gif";
        document.getElementById("Zoom9").src = sImagePath + "Zoom-bar_18.gif";
        document.getElementById("Zoom10").src = sImagePath + "Zoom-bar_20.gif";
			
        if ( Zoom<=cLevel1 ) {
	        iCurrentLevel=1;
	        document.getElementById("Zoom1").src = sImagePath + "Zoom-bar-selected_02.gif"; }
        else if ( Zoom>cLevel1 && Zoom<=cLevel2 ) {
	        iCurrentLevel=2;
	        document.getElementById("Zoom2").src = sImagePath + "Zoom-bar-selected_04.gif"; }
        else if ( Zoom>cLevel2 && Zoom<=cLevel3 ) {
	        iCurrentLevel=3;
	        document.getElementById("Zoom3").src = sImagePath + "Zoom-bar-selected_06.gif"; }
        else if ( Zoom>cLevel3 && Zoom<=cLevel4 ) {
	        iCurrentLevel=4;
	        document.getElementById("Zoom4").src = sImagePath + "Zoom-bar-selected_08.gif"; }
        else if ( Zoom>cLevel4 && Zoom<=cLevel5 ) {
	        iCurrentLevel=5;
	        document.getElementById("Zoom5").src = sImagePath + "Zoom-bar-selected_10.gif"; }
        else if ( Zoom>cLevel5 && Zoom<=cLevel6 ) {
	        iCurrentLevel=6;
	        document.getElementById("Zoom6").src = sImagePath + "Zoom-bar-selected_12.gif"; }
        else if ( Zoom>cLevel6 && Zoom<=cLevel7 ) {
	        iCurrentLevel=7;
	        document.getElementById("Zoom7").src = sImagePath + "Zoom-bar-selected_14.gif"; }
        else if ( Zoom>cLevel7 && Zoom<=cLevel8 ) {
	        iCurrentLevel=8;
	        document.getElementById("Zoom8").src = sImagePath + "Zoom-bar-selected_16.gif"; }
        else if ( Zoom>cLevel8 && Zoom<=cLevel9 ) {			
	        iCurrentLevel=9;
	        document.getElementById("Zoom9").src = sImagePath + "Zoom-bar-selected_18.gif"; }
        else if ( Zoom>=cLevel9 ) {
	        iCurrentLevel=10;
	        document.getElementById("Zoom10").src = sImagePath + "Zoom-bar-selected_20.gif"; }
			
    }