function pop_up(imagename,align_val) {
	if (align_val=="l"){ 
		height_val="550";
	}else{
		height_val="800"
	}
		
PopWin = window.open('images/large/'+imagename+'.jpg','TK_regWin',' scrollbars=no,toolbar=no,resizable=0,width=800, height='+height_val+' screenX=100,screenY=100,top=100,left=100');
}