function preloadGrfs() {

	var imgsgen = new Array();
	imgsgen[0]="grfs/1px.gif";
	imgsgen[1]="grfs/alpha.png";
	imgsgen[2]="grfs/arch_d.png";
	imgsgen[3]="grfs/arch_e.png";
	imgsgen[4]="grfs/contact_d.png";
	imgsgen[5]="grfs/contact_e.png";
	imgsgen[6]="grfs/deu_click.png";
	imgsgen[7]="grfs/deu_over.png";
	imgsgen[8]="grfs/deu.png";
	imgsgen[9]="grfs/eng_click.png";
	imgsgen[10]="grfs/eng_over.png";
	imgsgen[11]="grfs/eng.png";
	imgsgen[12]="grfs/iepenet_click.png";
	imgsgen[13]="grfs/iepenet_over.png";
	imgsgen[14]="grfs/iepenet.png";
	imgsgen[15]="grfs/img_d.png";
	imgsgen[16]="grfs/img_e.png";
	imgsgen[17]="grfs/m_actual_off.png";
	imgsgen[18]="grfs/m_actual_on.png";
	imgsgen[19]="grfs/m_actualtxt.png";
	imgsgen[20]="grfs/m_bstat_off.png";
	imgsgen[21]="grfs/m_bstat_on.png";
	imgsgen[22]="grfs/m_bstattxt.png";
	imgsgen[23]="grfs/m_intenstxt.png";
	imgsgen[24]="grfs/m_ostat_off.png";
	imgsgen[25]="grfs/m_ostat_on.png";
	imgsgen[26]="grfs/m_ostattxt.png";
	imgsgen[27]="grfs/m_probab_u_intens_scala.png";
	imgsgen[28]="grfs/m_probabtxt.png";
	imgsgen[29]="grfs/m_webcam_off.png";
	imgsgen[30]="grfs/m_webcam_on.png";
	imgsgen[31]="grfs/m_webcamtxt.png";
	imgsgen[32]="grfs/obs_d.png";
	imgsgen[33]="grfs/obs_e.png";
	imgsgen[34]="grfs/open_d.png";
	imgsgen[35]="grfs/open_e.png";
	imgsgen[36]="grfs/part_d.png";
	imgsgen[37]="grfs/part_e.png";
	imgsgen[38]="grfs/press_d.png";
	imgsgen[39]="grfs/press_e.png";
	imgsgen[40]="grfs/releas_d.png";
	imgsgen[41]="grfs/releas_e.png";
	imgsgen[42]="grfs/text_d.png";
	imgsgen[43]="grfs/text_e.png";

	imgsgen[44]="grfs/intensity/null.png";

	var imgpreload=new Array();
	for (i=0;i<=imgsgen.length-1;i++) {
		imgpreload[i]=new Image();
		imgpreload[i].src=imgsgen[i];
	}
	
	imgsintens = new Array();
	for (i = 1; i <= 20; i++) {
		imgsintens[i] = new Image;
		imgsintens[i].src = 'grfs/intensity/' + i + '.png';
	}

}