var fDesc=new Array(); fDesc[0] = "The ACRU (Agricultural Catchments Research Unit ) model has its hydrological origins in a distributed catchment evapotranspiration based study carried out in the Natal Drakensberg in the early 1970s (Schulze, 1975). ACRU4 was developed primarily as a teaching tool. It is made up of components that can be added/copied and pasted within a tree structure. It is aimed at small configurations consisting of a few sub-catchments but is very flexible regarding the components that can be added and how they linked to each other."; function tShowHide(id, show) { var s = document.getElementById("desc"); if ((s.innerHTML.length<=212 || show==1) && show!=2) { s.innerHTML = fDesc[id]; if (document.getElementById('m1')) document.getElementById('m1').style.display='none'; if (document.getElementById('m2')) document.getElementById('m2').style.display='none'; if (document.getElementById('more_txt')) document.getElementById('more_txt').style.display='inline'; } else { s.innerHTML = ''; } }