if(navigator)  {
        
	button01=new Image();
		button01.src="../../Images/Btns/PrevBtnOver.jpg";

	button02=new Image();
		button02.src="../../Images/Btns/PrevBtnDown.jpg";

	button03=new Image();
		button03.src="../../Images/Btns/NextBtnOver.jpg";

	button04=new Image();
		button04.src="../../Images/Btns/NextBtnDown.jpg";	
		        
}


function jumpTo (theLength,theIndex) {

	var Page = new Array(theLength + 1);
		Page[1] = "./01_Contents.html";
		Page[2] = "./02_Introduction.html";
		Page[3] = "./03_A_afarensis.html";
	 Page[4] = "./04_A_anamensis.html";
 	Page[5] = "./05_A_garhi.html";
		Page[6] = "./06_A_africanus.html";
		Page[7] = "./07_A_africanus_drawing.html";
		Page[8] = "./08_A_robustus.html";
		Page[9] = "./09_A_robustus_drawing.html";
		Page[10] = "./10_Homo_habilis.html";
		Page[11] = "./11_Homo_habilis_drawing.html";
		Page[12] = "./12_Homo_erectus.html";
		Page[13] = "./13_Homo_erectus_drawing.html";
		Page[14] = "./14_H_sapiens.html";
		Page[15] = "./15_H_sapiens_drawing.html";
		Page[16] = "./16_Conclusion.html";
		Page[17] = "../Exercises.html#Assignment4";

	for (i = 0; i <=theLength; i++) {
		if(theIndex==i) {
			window.location = Page[i+1];
		}
	}
}