var fDesc=new Array(); fDesc[0] = "SOHM is based on WWHM4. WWHM4 is a comprehensive continuous simulation hydrology and hydraulics modeling software package for use anywhere in the contiguous United States.The purpose of WWHM is to provide a visually-oriented interactive tool that easily and accurately models the hydrology and hydraulics of both urban and rural drainages of all sizes."; 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 = ''; } }